Melt ingredient is a term used to describe ingredients that are melted together to create a dish. CHEESE (6 letters) is a dairy product made from the milk of cows, goats, or sheep and is often melted in dishes such as pizza or macaroni and CHEESE. TUNA (4 letters) is a type of fish that is often canned and used in sandwiches or salads. Tunafish (8 letters) is a combination of TUNA and other ingredients such as mayonnaise, celery, and onion that is often used as a spread or dip.