Jellied meat is a dish made by cooking meat, often from pork, beef, or chicken, and then allowing it to cool so that the natural gelatin in the meat forms a jelly-like consistency. This process typically involves simmering the meat with water and seasonings, which helps extract collagen, a protein that thickens the liquid as it cools. Commonly served as a cold appetizer or snack, jellied meat can be found in various cuisines around the world. It is sometimes referred to as head cheese or aspic, depending on the preparation and ingredients used.