In The Symphony Verse, Blaine loves chicken, to the point where his friends bring him chicken when he's sad even if it's not dinnertime, simply because it cheers him up.
The boys of Dalton Academy in Dalton are absolutely crazy about Kurt's cookies. Especially Windsor boys, but effective to Stuarts as well. Kurt has no idea why, stating that his cookies are normal, it's just that the people who eat them are off their rockers.
Deconstructed in Princess Celestia Hates Tea. Everyone in Equestria and beyond adamantly believes tea is Celestia's favorite beverage. When she tries to come clean and admits that she actually hates the stuff, her subjects refuse to believe it and accuse her of being the Changeling Queen or Discorded.
Stephen Ratliff's Marissa Picard, the youngest person to become Captain of the Enterprise (at age 9!) loves everything strawberry flavored. Jelly, ice cream, sodas, anything. She is particularly fond of strawberry juice.
In Bait and Switch (STO) Captain Kanril Eleya loves jumja sticks, a Bajoran sweet that resembles a large lollypop. In chapter three she makes a point of bringing a large takeout box of cooked, not replicated, jumja sticks back to her ship with her.