Tunku Varadarajan gives an eclectic list of novels that contain compelling descriptions of food.
[I've never thought of The Wind in the Willows and gotten hungry.]
Two that I'd add:
A Debt to Pleasure by John Lancaster (About a psychotic gourmet);
A Confederacy of Dunces by John Kennedy Toole (Ignatius's venture into hot dog vending is too good for words).