Actually I am not too sure if this distinction is made in your state or province, but here in Washington, a "tavern", defined as an establishment that serves beer and wine, but not distilled spirits, does not have to serve food. A bar or cocktail lounge that does serve distilled spirits must serve food and they must have a certain number of items (I never did know how many), even after the attached restaurant closes. Usually around here, they have some cold sandwiches, some salads and a number of deep fryer items such as shrimp, fries, onion rings, fried mozzarella, battered and fried veggies, or other simple to make even for a bartender type items.