Chile con queso, sometimes simply called queso, is an appetizer or side dish of melted cheese and chili peppers, typically served in Tex-Mex restaurants as a dip for tortilla chips.

Cheese sauce is a sauce made with cheese or processed cheese as a primary ingredient. Sometimes dried cheese or cheese powder is used. Several varieties exist and it has many various culinary uses. Mass-produced commercial cheese sauces are also made by various companies, in both liquid and dry forms. These prepared sauces are used by consumers and restaurants, and commercial formulations are used in the production of various prepared foods, such as macaroni and cheese mixes and frozen meals.