What if a vampire eats food but doesn have the Eat Food Merit?
A vampire may consume food, but it refuses to stay down – unless the vampire spends a Willpower point each turn, she vomits within the scene (though some Storytellers may allow players to spend a point of Willpower to keep a character from vomiting). The same rules apply for drinking, as well. Note that other vampires find the practice of eating mortal food utterly disgusting – ” like eating a pig’s slop,” in the words of one rural Gangrel – and one who makes a practice of doing so will probably earn the derision of his undead peers.