Coffee, perhaps with the descriptor of "black as night" or "black as a witch's heart", is a very bitter drink on its own. Having a character drink it undiluted shows that they are "tough" enough to enjoy it. Milk and sugar weaken the pure coffee flavor too much for this character, and thus the trope only gets downplayed when a character does exactly that.
With coffee culture changing so frequently around the world, this trope can evolve significantly depending on the setting. For an office environment, the easy availability of coffee makes only the blackest of black truly distinguish a character as a leader figure or go-getter. It's also common in any Cop Show, Detective Fiction or Film Noir, where the Hardboiled Detective that isn't knocking back heavy scotch will most assuredly take their coffee black to keep themselves alert. With the Japanese usually preferring tea, coffee consumption in general (no matter the strength) becomes a quick signal of confidence or hyper-masculinity in Japanese media.
This is a Sub-Trope of Drink Order with an extra shot of manliness. Also see Klatchian Coffee, which explores the extremity of the coffee itself and its uses (e.g. a G-rated Mushroom Samba or a hangover cure).
- Used as a plot point in Sudden Impact. For years Cowboy Cop "Dirty" Harry Callahan has been ordering his coffee black and is tipped off of a robbery by his server pouring a bunch of sugar into it.
Every day for the past ten years, Loretta there's been giving me a large black coffee, today she gives me a large black coffee only it has sugar in it, a lotta sugar. I just came back to complain. Now, you boys put those guns down.
- Airplane!: "I like my coffee black. Like my men." Spoken by a six-year-old girl to the boy who sits next to her (for laughs, obviously.)
- Subverted in Pulp Fiction. Winston Wolf is a badass among badasses in the Marcellus Wallace crime organization, but when Jimmy offers him a cup of coffee, he tells him he likes it with a lot of cream and sugar. No one dares to question his man card.
- In Guards! Guards!, Vimes takes his coffee black. He tries to order it "black as a moonless night", but the owner picks apart the metaphor until Vimes finally settles for "a moonless night as black as that coffee."
- In the James Bond books Bond- unlike almost every other British person in the universe- hates tea, preferring black coffee.
- Nick Andros, a young and skinny but tough and resourceful deaf-mute drifter in The Stand, takes his coffee black. Lampshaded by Sheriff Baker: "Take it like a man, do you?"
- In Saga of Soul, the multiversal Serial Killer "Murder" makes his order to a surviving barista after killing everyone else in line at a Starbucks, saying he likes "coffee as black as my soul".
- Captain Janeway's Drink Order on Star Trek: Voyager: "Coffee. Black." It's good stuff. She beat the Borg with it.
- Gibbs in NCIS is also known for drinking black coffee. It comes with being a former marine. When Tony takes over Gibbs' position during his 10-Minute Retirement, Tony also starts drinking black coffee. Non Action Girl Abbie prefers soft drinks.
- Detective Dale Cooper from Twin Peaks is a talented, experienced FBI agent who always takes his coffee black.
- Michael Ian Black of Stella (US) provides an example that it's probably best not to overthink:
Michael: I like my coffee the way I like my women: Strong, black, and proud.
- Big the Musical has a song called "Coffee, Black" based on this trope.
- Ace Attorney. Mixed in with Must Have Caffeine, Godot always drinks his coffee pure black, which even provides one of many of his famous quotes "Blacker than a moonless night, hotter and more bitter than Hell itself... that is coffee." Later on you learn that someone had once slipped poison into his coffee and put him in a coma for 5 years. It's understandable that he'd be wary of putting anything in his coffee after that, especially if the poison was disguised as cream or sugar.
- Shin Megami Tensei:
- Persona 3 : Ken Amada says even he drinks coffee black in a random optional conversation you can have with him (which you can even joke you like it with hot sauce) .
- Persona 4: There is a scene where Ryotaro Dojima asks the player how he wants his coffee:
Black: Just like me. The easiest kind to make.
With cream: Huh...? Oh, uh, well... It's just I haven't heard anyone ask for that in a while.
Cream and sugar: Hah, you have the same tastes as Nanako.
Surprise me: Alright, I'll pour you a good one.
- Kyle Hyde in Hotel Dusk 2 (Last Window). Another cop example, Kyle likes to drink his coffee black, at least shown in Last Window at the cafe.
- Ringabel along with his starting world counterpart Alternis Dim like coffee. Both being Dark Knights, it's only natural that they'd like it black.
- According to his profile, Hawke in Advance Wars likes his coffee black.
- Animal Crossing:
- Discussed in Wild World. A "lazy" villager will sometimes say "Is it true that "real men" like bitter coffee? I guess I'm just a regular guy then, 'cause I like my coffee light and sweet."
- Subverted in New Leaf. You can work part-time at the local cafe. It turns out some of the manliest villagers like their coffee sweet and some of the girliest are fond of black.
- In Metalocalypse, Nathan Explosion has this to say about Dethklok's new song, the Duncan Hills Coffee Jingle:
We're here to make coffee metal. We're here to make everything metal. Blacker than the blackest black... times infinity.
- Dr. Algernop Krieger of Archer once ordered his coffee the same way he likes his women: "black, bitter, and preferably fair trade."
- Current or former military personnel often take their coffee black. Procurement tends to buy the cheapest, cruddiest coffee possible so the cream and sugar tend to run out fast (alternatively: the officers stole it all), which means soldiers, sailors, and airmen tend to get used to black coffee and stay with the habit after mustering out. Plus, depending on how busy you are, black coffee is just faster. Besides, it's not like sugar and cream will make bad coffee taste good.
- This tropes get invoked by Boss Coffee to the Japanese public.
- The "third wave" coffee movement, with its commitment to high-quality, single origin beans, prefers drinking coffee without milk and sugar, though latte art is also appreciated.