If I play at the tables - NO FINGER FOOD, it's absolutely unethical to eat fries, chicken fingers, burgers, nachos, and what not with your
hands, and then touching the cards and chips. FO me it's sushi, soup, and maybe a burrito in a wrap. On line, whatever I want - I usually eat fruit snacks in the house breaks (grapes, orange, apple, banana, and a bigger meal every 3-4 hours. After the tourney, I usually have a couple of beers, wine, or scotch to either celebrate great plays or cooling off the coolers and suckouts.