Jayne Castle (aka Jayne Ann Krentz) has an amusing trick with her light SF Harmony novels. The foods are similar to those from Earth, but slightly different. So the characters drink coff-tea and eat pear-berries.
Fairytales make a big deal about food with Snow White eating a poisoned apple, Goldilocks stealing breakfast and various draughts of forgetfulness, immortality or love sickness causing no end of trouble.
When I was writing my Steampunk novella, "Wanted: One Scoundrel", I couldn't resist adding a Steampunk touch to the suffragette afternoon tea. Fog cakes have a dab of dry ice in their centre so they "fog" as the automated butler hands them round.
Do you have a favourite fantasy food?