Cheese sauce is a creamy condiment made primarily from melted cheese and a thickening agent, often flour or cornstarch. It is commonly used to enhance the flavor of various dishes, such as macaroni and cheese, nachos, and vegetables. The preparation of cheese sauce typically involves heating milk or cream and gradually adding cheese until it melts and combines smoothly. Different types of cheese, like cheddar or Monterey Jack, can be used to create unique flavors. Cheese sauce is popular in many cuisines and can be made from scratch or purchased pre-made.