Nice Girl: Boiled Egg and Hanpen. In fact, she just loves oden as much as the cart owner does, in general. That's another hint that she's his long-lost daughter.
Young Man: Konyaku and Ganmodoki.
Career Woman: Ganmodoki and Hanpen.
Old Lady: Kinchaku and Atsuage.
Glamor Girl: Shirataki and Hot Dog Wrap.
Hotshot: Beef Tendon and Satsuma Age.
Mysterious Man: Rishiri Kobumaki and Matsusaka Beef.
Housewife: Octopus and Chicken Meatballs.
Ghostly Girl: Tamba Matsutake and Ise Shrimp. In fact, she only shows up — alone — if 50% or more of your inventory consists of those two ingredients.
Oden Cart 2: A Taste Of Time: Follows the same formula as its prequel.
The Breadwinner: Daikon and Konyaku.
Fireworks Master: Daikon and Chikuwa.
Apprentice: Daikon and Chikuwa.
The Scribe: Konyaku and Chikuwa.
Dumpling Girl: Hanpen and Ganmodoki.
The Matriarch: Hanpen and Atsuage.
Samurai in White: Kinchaku and Chikuwabu.
Courtesan: Atsuage and Ganmodoki.
Hatsusan: Kinchaku and Shirataki.
Bearded Doctor: Fish Bals and Ezo Scallops.
One-Eyed Man: Shirataki and Chikuwabu.
Reluctant Ronin: Boiled Egg and Satsuma Age.
The Pale Lady: Aki Oysters and Echizen Crab.
Old Raconteur: Konbumaki and Ise Rock Lobster.
Sweet Old Man: Fish Balls and Hida Beef. He's this game's Final Boss, and the evil demon that everyone has been talking about.
Huniepop: We have the following foods that match the listed girls' likes:
Junk Food: Audrey, Kyu, Beli, Jessie
Breakfast: Tiffany, Kyanna, Lola, Venus
Fruit: Audrey, Aiko, Lola, Celeste
Vegetables: Kyanna, Aiko, Beli, Momo
Candy: Tiffany, Kyu, Nikki, Celeste
Desserts: Jessie, Nikki, Momo, Venus
Deus Ex Series and mods:
Mad Ingram of Deus Ex Nihilum sure likes his ham sandwiches. One stressful scene has him refer to them as if they were alcoholic drinks.
Gunther Hermann of the original Deus Ex like orange soda. He gets very irritable when a soda machine gives him lemon-lime soda instead of orange, causing him to suspect that the maintenance man is fucking with him. The sequel shows that his tiny conspiracy theory was right.
Adam Jensen of Human Revolution and Mankind Divided really likes breakfast cereal. You can find boxes littered about his apartment and his office at TF29.
The eponymous Super Mario Bros.: Mushrooms and pasta. This was especially true in the cartoons. Each episode had Mario mentioning pasta at least once, while pizza was the only thing the live-action segments ever showed Mario and Luigi eating. Lotsa spaghetti!
Mario's soul assessment by the Star Gate in Mario & Luigi: Partners in Time reveals that Mario's diet is filled with much alfredo sauce, and that he needs to cut down on carbonara. However, it also recommends puttanesca, for that stuff is great.
If you don't move Mario in Super Mario 64 for five minutes or so, he will sleep on the floor and dream of spaghetti and ravioli.
Similiarly, Yoshis like all sorts of food, but honeydew melons are their absolute favorite in Yoshi's Story. For the best score, you have to find 30 of them in every level. Each color of Yoshi also had a particular favorite among the regular fruits, which were twice as many points worth as the rest.
Wario: Garlic cloves, which is apparently the 'evil' counterpart to Mario's mushrooms.
To go with his purple theme, Waluigi has eggplant instead of garlic.
Peach often rewards Mario with cake for rescuing her.
Rosalina and the Lumas from Super Mario Galaxy love Star Bits, which are said to taste like honey (and are modeled after the Konpeito candy from Japan).
Bowser really seems to love cake. Hell, in some games it comes across like the only reason he kidnaps Peach over and over again is so he can eventually force her to bake cakes for him. Unfortunately, he gave up cake for drumsticks which heal him immensely.
Sie Kensou of The King of Fighters: Meat buns. He eats one in his taunt and used to eat them in his oder intros. There's even a variation in his usual intro (which appears if you use him as your first character) where he chokes on his meat bun, turns blue and then finally gets it down: some of the games have it as a life-restoring move as well, but the choking variation can cause him to lose life instead. And atleast two of his post-match victory portraits show him either eating or holding pork buns.
The profiles for every KOF character lists their favorite foods. I.e., Athena loves ichigo daifuku (a Japanese cake made with mochi and strawberry), Kula Diamond loves lollipops and ice cream and Kyo Kusanagi loves grilled fish.
Kyo lampshades the trope in KOF XIII via telling K' (who likes eating beef jerky) that he should switch to fish so he won't be so gloomy; simultaneously, Kula's love of icre-cream is amped Up to 11 and used as a Running Gag in her pre-fight talks, with Yuri Sakazaki openly wondering if she'll double-cross her partners just to get some of it.
Taokaka from BlazBlue also loves her Meat Buns. She and Kensou would probably get along if she wasn't so damn crazy.
Carl Clover from the same game as Taokaka has a love for cookies according to his official profile.
And Hazama just loves hard boiled eggs. To the point that he shallows them whole, to compliment his snake theme.
In other material and hinted in the radio talk show, Ragna himself is fond of a type of udon called "tentama udon" (heaven jewel udon).
Yunsung of SoulCalibur got distracted from Soul Edge by meat buns in the Good Ending of Soul Calibur 3.
Also from Soul Calibur, Xiba loves steam buns. Many of his lines nod to this, such as "Now bring me some steam buns. Lots of them!"
In Fatal Fury, characters have their favorite foods listed on their profiles. Some examples are:
Jubei Yamada's favorite food is Hot Spring-boiled eggs, but he also seems to love senbei rice crackers. He is often pictured with one and also uses them as a weapon.
Geese Howard's favorite is rare steak.
One of Mai Shiranui's favorite dishes is ozouni, a rice cake soup served on new year's day. This follows some theme of sorts, as Mai's birthday is on new year's day, and a lot of the things she is stated to like are related to it.
In Tales of Symphonia, every playable character has an ingredient that s/he likes, and an ingredient that s/he dislikes (e.g., Colette likes all fruits, but dislikes bell peppers, or Raine likes lemons but hates mushrooms). Every time Lloyd cooks with one of those ingredients while that character is in the party, his/her affection increases or decreases respectively by one point. Having a character cook something using an ingredient that they like will also increase that character's overlimit gauge by ten percent (five percent if someone else cooks using the favored ingredient).
Every character in Star Ocean and Star Ocean: The Second Story has a favorite food which you can cook, which restores all their HP and MP. They generally make sense and/or poke fun at the character. Brooding Joshua likes the high-class escargot, perky Millie and Precis are partial to sugar-filled fruit parfait and chocolate crepes, and cat-people Perisie and Noel like tuna. Manly Cius and Iria, and boozer Opera, like various alcoholic drinks. Main character Claude likes good old steak.
Metal Gear Solid 3: Snake Eater seems to declare that Naked Snake's trademark food is Snakes and Frogs (the former allowing for his Mission Control to call him a cannibal) - to the point where the latter is referenced in the theme tune. In the same game, EVA is very fond of instant noodles. Meanwhile, Solid Snake in the other games is a fan of blueberries. Sunny is into fried eggs, but that may be because that's the only thing she knows how to cook.
Several characters from the series love Ultimate and Finest Curry, which also happens to be one of the hardest items to cook in the games they appear in. Both curries are treated as an Impossibly Delicious Food.
Klaus from A New Beginning loves macaroni. His favorite food is pasta salad, but he also has an infamous cutscene where he goes off on how macaroni isn't just good, it's the ultimate foodstuff because it's a reflection on the human condition. Clement is disturbed.
Mist from the first Rune Factory loves turnips. A lot. It's her favorite gift, thus making her the easiest person to become close to. Later games in the series have a new variety called Pink Turnips, and it's implied she bred them into existence.
Unique among the Loads and Loads of Characters in the series is the Harvest Goddess, who has the same favorite food (strawberries) in every game she's appeared in.
Also unique is Pia from Rune Factory 3, whose favorite food (squid) stems not from love of the food but from hatred of it.
In Story of Seasons, each of the villagers (including the twelve potential Love Interests) have one of these. Presenting the favorite food is the fastest way to raise that character's friendship level.
A general example in Fable II. Everyone in the game has things they like, most of them have an object/gift they like, and about half of those are food. (Doing things people like will make them like you more, and thus give you better discounts at stores)
Max, one of the protagonists of Dark Chronicle, loves potato pies, a treat his mother used to make for them. They appear in-game as consumable items that increase his maximum HP.
Ike of Fire Emblem: Path of Radiance and Radiant Dawn has a fondness for meat - this does come up a few times in the games, but the way Japanese fan artists depict him constantly eating caveman-style slabs of it would make you think it was the meaning of his existence.
Olivia also loves sweets, as seen in both her supports with Gaius (who makes her the beta tester for his pies) and Kellam (where she uses the honey he gives her to make rock candy)
According to his and Cordelia's supports, Lon'qu's favorite food is cabbage stew.
The Avatar's supports with Tharja imply that s/he likes liver and eel pie. She gets the Avatar to try some as they get ever closer to being wed. The Avatar also seems very fond of bear meat.
According to Female Morgan's C support with her sibling, her favorite food is bear meat. Her least favorite food? Veggies, though she doesn't seem to mind them now.
Maribelle's favorite thing to drink is tea.
In Fire Emblem Fates, when the Avatar collects produce from the food tiles, the character next to these spots will probably speak about their favorite foods. (ie., Azura likes strawberries, Selena gushes about fruits and especially red apples, Setsuna mentions loving watermelons and tofu, Hinata likes either meat or rice and fish, Subaki likes juicy yet slightly sour fruit, etc.) Plus some supports are centered on similar deals: Sakura's Sweet Tooth is mentioned in her talks with Hayato and Saizo, Saizo's supports with Mozu involve him telling her about his love of a specific seafood dish, Dwyer is obsessed with coffee, etc.
In Fire Emblem Echoes: Shadows of Valentia, one of the mid-game quests involve meeting a Cheese Lover (yes, that's his name!) and finding a very rare type of cheese for him. Also the player can gather some food items and feed them to some charas to relieve them from fatigue; the more they like it, the better the results (like feeding Mae cookies).
Kirby loves tomatoes, especially Maxim Tomatoes (which completely heal his HP) in the games. In the anime, continuity he's obsessed with watermelons, to the point that it was his first word. If Squeak Squad is anything to go by, he also loves cake, and if you steal his cake, he will do whatever it takes to get it back!
The title character is fond of chili dogs in the western cartoons, to such an extent that it's found its way into recent games. Similarly, the Adventures of Sonic the Hedgehog interpretation of Robotnik / Eggman was known for having a diet that contained nothing but eggs. It was noted by Grounder in one episode that "He's had eggs everyday for the last ten years." In that same episode he brutally assaults Scratch and Grounder for not giving him his daily serving of eggs and made hotcakes instead.
The older game manuals also mentioned Knuckles being partial to fruit. Grapes being his favorite.
In Sonic Unleashed, there was Professor Pickle, who had a thing for cucumber sandwiches.
The Fairy Companion from Sonic Unleashed, Chip, had a thing for chocolate. In fact, it's what inspired his name.
The British continuity (Sonic the Comic etc) retains the thing with Robotnik and eggs, but has Sonic, Tails and all their friends have an obsession with all fast food that is hilariously (possibly deliberately) dissonant with the theme of them coming from a green natural zone as opposed to Robotnik's industrialism.
According to the manual, Lemeza from La-Mulana claims "curry" as one of his favorite things in the world, period. The pause animation for the game has Lemeza's sprite gorge himself on curry, then take a nap. This is actually an in-joke/reference to the fact that when they needed a last name for the character, they settled on "Kosugi" when they saw a commercial for premixed curry where that is the name of the mascot. Scanning the wall of the hot springs on the Surface reveals that one of its side effects is "curry addiction".
Pop from Luminous Arc 2 and her crabs and anything made with crabs. Yes, even crab gelato.
Luna loves her water.
Jack in MadWorld is often soon chowing down on onions, they even restore him to full health in-game.
Fandom has taken Roxas from Kingdom Hearts II's fondness for Sea-Salt ice cream and run with it. Canonically, though, Ansem the Wise's favorite food is, in fact, Sea-Salt Ice Cream. To the point where it is the password that unlocks the alternate Twilight Town. Seasalt ice cream has shown up in many places throughout the series, and stated to be liked by many, though Roxas is definitely the most notable example; it's apparently become something of a Running Gag. Sea-salt ice cream's presence in the series started as Nomura's own Trademark Favorite Food after he tried some at Tokyo Disneyland and loved it.
The World Ends with You uses this as a gameplay mechanic, how much a character likes a certain meal effects the Sync Boosts you get. Of the four beginning ramen types, Neku likes Shoyu Ramen, Shiki likes Miso Ramen, Beat like Tonkotsu Ramen, and Joshua prefers Shio. Shiki and Beat both like fast food. Joshua is disgusted by it. Neku likes ramen, Mexican food and coffee.
The Demon King Mike of Arcana Heart can be bribed by Yoriko with doughnuts. Where he puts them away since he's trapped in the form of a Simple Staff is anyone's guess.
In the Japanese version of Rockman.EXE, Netto is a Big Eater, and his favorite food is mentioned to be curry, specifically tonkatsu curry rice. The anime in particular shows him eating curry very often, and he completely pigs out on it in one episode, going as far as curry-flavored ice cream. Fan works tend to take his love of curry and crank it up to 11.
In the Wii version, Doc Louis loves eating chocolate bars, and apparently has tickets to a chocolate bar convention. He also gives strange sayings and metaphors about chocolate. Probably explains why he seems to have gained weight. In Doc Louis's Punch-Out!!, he will sometimes take out a chocolate bar and eat it to recover stamina, and punching it out of his hand causes him to tear off his jacket, revealing a leopard-print shirt underneath and making him a lot harder to beat.
Soda Popinski loves soda, as is obvious from his name: punching it out of his hand has similar but less severe repercussions, although considering how often he drinks it, you basically have to do it and one of the in-game challenges involves beating him without interrupting him when he's taking a drink.
You get to input your favorite food in Contact. Yes, as in your personal favorite food, since you the player are a character in the game. You'll see it referenced many times by other characters; in particular, the "soda" item will always be "#FOOD flavored." If you favorite food is apples? OK. If your favorite food is fish 'n' chips? Um, ewww.
Anti-Guy from the original Paper Mario just loves lemon candy. A piece of lemon candy is enough to bribe him to give you his treasure chest. What happens if you don't have any lemon candy on hand? A very, very difficult Boss Battle will ensue.This dosen't work on the later Anti-Guys. though.
Ignis, being the team's cook and gifted with a refined pallet, can bake cakes over campfires. He also harbors a fondness for fast food and black coffee.
Prompto enjoys anything spicy, and is also a connoisseur of junk food.
In Simon the Sorcerer, dwarves like beer a lot. They like it so much that "beer" is the password to their mine.
Every character in Touch Detective has a trademark favorite food. Though most of them are only listed on the website. Penelope's love for bananas on the other hand is made very apparent. She loves bananas so much that she hangs a stuffed pair of them from the ceiling of her room and also owns a banana stand for keeping them fresh.
Jasper Gein of Silent Hill 4 acts as a Broken Bridge, mumbling about how thirsty he is and how he could use some chocolate milk, refusing to move until you give him some.
Etna from the Disgaea series has a fondness for a special pudding that comes from the Sea of Gehenna. She gets into fights when Laharlnote he's done so twice, in Disgaea 2 and Disgaea Infinite, or anyone else, tries to steal it.
Valvatorez of Disgaea 4: A Promise Unforgotten loves sardines, a food he developed a fondness for in place of blood after deciding to stop drinking the stuff due a certain incident. He's quite prone talking about how great they are, especially in the On the Next segments, and "Sardine power!" is one of his catch phrases.
The inhabitants of Toto Bunny from Disgaea 5: Alliance of Vengeance love carrots. Usalia, too... until Majorita cursed her. The nature of the curse, which gradually turns her into a berserk beast, can only be staved off by her least favorite food (curry), while her favorite at the time (carrots) accelerates it, hence she gives an air of hating carrots to keep the curse in check. Over time, she came to love curry to the point it became her favorite food, or at least she made herself love it at first after her parents were killed.
For Akihiko Sanada, it's beef bowl. This is used to obliquely announce his official arrival on the scene late in (the now non-canon) Persona -trinity soul- when Shin, delivering take-out to the police station, wonders who the beef bowl ramen is for and a couple of women instantly volunteer to deliver it for him. Additionally, Shinjiro claims that Akihiko only eats "That protein shit", supplemented with ramen. This is supported by a series of fetch quests that require the Main Character to talk to each of their party members; they must get protein powder from Akihiko, whom goes into great detail about it. He also orders a food with protein powder while overseas in Persona 4: Arena and was disappointed that 'protein powder' wasn't in the menu.
Ken Amada likes omelets, usually supplemented with fried rice.
Nanako likes meals made from eggs, omelets in particular.
Bumbling detective Adachi is often seen at the local department store buying cabbages. Subverted in that he actually doesn't like them that much, but he's on a budget and they don't require any cooking.
The booklet that comes with the second official Drama CD actually reveals the official Trademark Favorite Food of 6 of the 8 party members: Yosuke loves fried ginger-pork and meat-potato Stew, Chie (as mentioned) loves meat in general, Yukiko's favorite is potato salad with a dessert of candied sweet-potato, Kanji likes pork stew and pudding, Rise's favorite is vichyssoise and Naoto loves california rolls. All these picks are based on actual food-items you can give to them in-game, to improve their relationship with them. The booklet also points out that Teddie is incredibly blunt when it comes to food, as demonstrated during the cook-off halfway through the game.
Persona 5: Most of the main cast have foods that they seem to obsess over.
Ann loves sweets, but seems particularly fond of crepes.
Ryuji also loves ramen and has a local hole-in-the-wall ramen joint that he drags the Protagonist to.
Any time sushi is mentioned, Morgana begins to pine for fatty tuna, which is almost always denied to him.
Yusuke is constantly eating Pocky during the Phantom Thieves meetings.
Futaba apparently used to eat nothing but Sojiro's curry. It turns out that it's because it was a recipe that her mother created to compliment Sojiro's coffee.
The Protag himself can prove himself to be a fan of the local fast food joint, Galaxy Burger by eating a series of increasingly huge burgers. The last one is literally bigger than his own head, and with the right stats you can finish it off without any repercussions.
Rorona from Atelier Rorona loves eating and baking pies. Her Trickster Mentor, Astrid, has barred her from using the alchemy workshop for baking, but when she hands the workshop over, Rorona is able to make as many pies as she wants (without her master's permission, of course). One of the endings has Rorona becoming the "Pie Master".
Pizza with no olives for Dante from Devil May Cry. In the first novel tie-in that occurs before the first game but gets booted out of canon because of the third game, he also loves strawberry sundaes. The strawberry sundae becomes a Discontinuity Nod in the anime. He also liked tomato juice in one manga.
From the Edutainment Game series Eagle Eye Mysteries: Most of the local kids in the first game love pizza, and in particular Mark Moriarty and Dave Grant are noted for having eaten a Pig Lovers' Pizza which is made with ham, sausage, and Canadian bacon.
From the same game, Melinda Joost likes ice cream.
Nigel Eagle in the sequel enjoys fish and chips.
The Commodore in Guilty Party is an obsessive lover of pudding. He spends most of his vast fortune on it. This is actually a plot point, as the golden artifacts left by his archnemesis Mr. Valentine end up being pudding-related...
As the lead-up comics to The Sacrifice DLC point out, Zoey from Left 4 Dead loves peanut butter. So cue squeeing when she finds out that the army base the group is being held in contains huge jars of the stuff.
P.B Winterbottom of The Misadventures of P.B. Winterbottom really likes pie. He broke time and space to get pie. He created clones to get pie. He destroyed buildings. He eats nothing but pies.
In Devil World, Tamagon likes to eat ice cream cones, though they do nothing in the game but give points.
Papa Caesar and Chinese food from House of the Dead: OVERKILL, to the point that his in-game theme music is titled "Dim Sum For Papa".
The entire world of Magicka seems to run on sausage and cheese, if the concept art and a good bit of the NPC dialogue are anything to go by.
Khajiit have Moon Sugar, a Fantastic Drug similar in properties and appearance to real life cocaine, plus an extremely sweet taste. They add it to nearly all of their food, to the point where outlanders in Elsweyr are warned against eating the native food. The "Den Mothers" who control Moon Sugar production are some of the most powerful individuals in Khajiiti society as a result.
The Nords in Skyrim favor mead as their alcoholic beverage of choice, to the point that a meadery is one of the most powerful and corrupt institutions in Skyrim. Outlanders occasionally complain about mead, wishing more taverns served beer instead. Mead is Serious Business: Only call a Nord a "milk-drinker" if you're prepared for a fight.
In The Sims 2, sims who botch using the ReNuYu Aspiration Changer end up with the "Grilled Cheese" aspiration. All their wants, fears, and dreams revolve around cooking, eating, and serving grilled cheese sandwiches.
Vincent of Catherine has a trademark favourite drink: the Cuba Libre, otherwise known as rum and cola. Vincent's drinking buddies also seem to have their own drinks of choice, and Katherine also seems to like pastries.
Mr. Stewart (or perhaps Michael) apparently can't get enough of the A&G Diner's turkey, strawberry jam, and cereal sandwich, which York dubs the Sinner's Sandwich (because he thinks only someone atoning for some kind of crime would voluntarily eat one).
Professor Diggins from Fossil Fighters loves all kinds of sweets, but his especial favorite are dino cakes, a kind of dinosaur-shaped snack cake. At one point, you have to make a snack run for him in order to advance the plot.
The Blob from A Boy and His Blob loves jellybeans! They're not just tasty to him—they help him transform into lots of things. In the 2009 game, his planet, Blobolonia, is even shown to be bean-shaped, and all of his fellow blob-people love to be given jellybeans as well.
Mondo from Killer is Dead loves soft-boiled eggs. The main reason he keeps his assistant Mika around is because she can prepare them exactly the way he likes them.
In Opoona, rice with grilled eel is Copoona's favorite food. Especially because it makes him feel grown-up when he eats in.
Cookie Masterson, the most popular host of You Don't Know Jack, seems to really like fortune cookies, so much so that in the 2011 version, they made a special kind of question based on cliché cookie fortunes, which would always begin with Cookie eating said cookie first.
100% Orange Juice!: QP really loves pudding. So much so, that her subtitle (Seeker of Pudding) reflects this, and her story mode has her chasing after Marie Poppo, who has stolen her pudding.
Tomodachi Life: Every single Mii you add in the game will have an All-Time Favorite food (which causes them to breakdance) and a Super All-Time Favorite Food (That causes them to turn into a rocket and shoot into space in bliss) when eaten, it will give them a huge happiness boost. The twist is that you don't know which foods each Mii likes until they try them, so they can go crazy for stuff like apple pie or roast chicken as well as for white bread, chewing gum or tap water. They can even have their favorite foods be spoiled milk or moldy bread, if the RNG feels like having a laugh.
Each character in Senran Kagura has a favourite food, at least for those who have full profile. However, Yomi's liking for beansprouts is something you definitely notice: Almost everything she cooks has beansprouts on it, she cannot stop talking about them and she is ready to kill some one for not liking beansprouts (or become friends with those who like them).
Saints Row: The Saints, especially The Boss, Johnny Gat and Pierce Washington love Freckle Bitch's Hamburgers.
Alistair in Dragon Age: Origins admits to "an unholy love of fine cheeses." He never actually has the opportunity to eat any cheese during the game, but the fandom nevertheless has fun with this.
New Dynamic English has Max Wilson who seem to talk about steak as his favorite food so much that he's given the nickname "Mr. Steak" by Elizabeth.
Cap'n Cuttlefish likes crab cakes so much that he gets kidnapped due to the distraction.
In the North American localization at least, Marie really likes hot dogs, identifying them as "the perfect food" in the "Marshmallow vs. Hot Dog" splatfest. Her taste for them is also repeatedly referenced in the stage intros.
Both the Japanese and European versions have Callie and Marie mentioning fries/chips multiple times. They do seem to mainly like sweets though.
Papyrus makes a lot of fuss about his spaghetti, leading many to assume it was his favorite. This was ultimately subverted in a one year anniversary Q&A special where we find out his favorite food is actually the oatmeal with the dinosaur eggs in it. Apparently, he's never even tried spaghetti—he just makes it because everyone else likes it.
Temmies like, appropriately, Temmie Flakes. Giving them some in battle is one way to spare them. Bizarrely, Temmie Flakes are nothing but shredded color construction paper.
Toriel seems to prefer a snail-based diet.
Sans is thought to be fond of ketchup, due to downing an entire bottle of it like a drink if you turn down his offer of putting some on your food at Grillby's. He could have a thing for hot dog condiments in general, considering you find bottles of mustard and relish as well as ketchup in his first sentry station.
Despite the only real evidence being that you can swipe some from her fridge, Alphys is often associated with Instant Noodles.
It's suggested that Asgore's favorite is Toriel's Butterscotch-Cinnamon Pie, due to finding several discarded recipes for it in the trash in the kitchen at New Home, implying he tried and failed several times to recreate it. Unlike the others, this one actually has a gameplay implication: If you eat the pie that Toriel gave you when you're fighting Asgore at the end of a Neutral Run, it'll remind him of her and he'll take hits to his attack and defense. Similarly, if you eat it when you're trying to SAVE him and Toriel at the end of a True Pacifist Run, they'll both be brought within one ACT of being SAVEd. Because of the implication there that Toriel is also fond of it, some believe that this extends to their late son, Asriel, though there isn't any evidence for or against this.
Mew Mew's fondness for snail ice cream is allegedly a plot point in ''Mew Mew Kissy Cutie''. Only Alphys actually watches that show, though.
In the same Q&A that Jossed the idea of Papyrus's favorite food being spaghetti, we learn that Bratty and Catty's favorite food is Glamburgers, which was hinted at, but not confirmed, in the game proper by Burgerpants who recounts how they asked him to smuggle them several Glamburgers.
In Xenoblade Chronicles X, the alien Ma-non race have a strong liking for pizza. Some missions in the game have the Ma-non help you out simply in return for some pizza, hot or frozen. The Ma-non can always be seen hanging around NLA's pizzeria, whose beleaguered proprietors have to work extra hard around the clock to keep up with the constant orders.
Bayonetta can craft a number of healing items, all of which are lollipops.
Zombies, Run! has the radio operator Sam Yao obsessed with Curly Wurlys and Marmite.
In the Yo-kai Watch series, all of the Yokai have at least one. Their preferences can be, for each one, (deep breath) Rice Balls, Chocolate Bars, Fish and/or Sushi, Ramen, Chinese Food, Milk, Juice, Meat, Vegetables, Candy, Sweet Things, Hamburgers, Bread, Oden Stew, Soba Noodles, Snacks, Ice Cream, Pasta, Pizza, Donuts, Hot Dogs, Tempura, Sukiyaki, Delish-sticks, or Curry.
Logical Journey of the Zoombinis has the Pizza Trolls who, you guessed it, love pizza (and sundaes, in the later difficulty settings). Thing is, they are very picky about what they like, which makes pleasing them so that you can pass quite challenging.
All the townsfolk in Stardew Valley have at least two foods they love that will earn the maximum boost to relationship points if you give them some.
A Deleted Scene in Tomb Raider (2013) would have revealed that what Lara misses from home is Jaffa Cakes. The spin-off comics then started including Jaffa Cakes as a Development Gag, so it's now canon that Lara really likes Jaffa Cakes.
Sima Shi of Dynasty Warriors is crazy about meat buns to the point that he chases his brother for eating it in the 7: Xtreme Legends. Then in the expansion of the eight game, he orders his brother, sister-in-law and two of his loyal retainers to find the ingredients for the perfect meat bun. Even in the crossover game, Warriors Orochi 3, where he and Date Masamune beat up a bunch of officers just find the culprit who stole their meat buns.
Slime Rancher uses this as a game mechanic; Every corrallable slime—barring Pink Slimes(which can eat every kind of food but have no favorite), Puddle Slimes(which can only eat water), and Fire Slimes(ditto with ash)—has a favorite food, and being fed that food will cause it to produce double plorts. Largo Slimes can have two favorites, matching their base slimes, and feeding Gordo Slimes their favorite food will make them pop faster.
Rock Slimes: Heart Beets
Tabby Slimes: Stony Hens
Phosphor Slimes: Cuberries
Boom Slimes: Briar Hens
Rad Slimes: Oca Oca
Crystal Slimes: Odd Onions
Honey Slimes: Mint Mangoes
Hunter Slimes: Roostros
Quantum Slimes: Phase Lemons
Tangle Slimes: Painted Hens
Dervish Slimes: Prickle Pears
Mosaic Slimes: Silver Parsnip
Gold Slimes: Gilded Gingernote While Gold Slimes can't be corralled, and won't eat anything else, feeding one a Gilded Ginger will cause it to drop five Gold Plorts, vs one when struck with anything else or three when struck with anything while the player has Golden Sureshot.