A mould is an item in which a food dish is cooked or prepared, and then turned out of for serving. Its function is to both hold the food item in question together, and to form it into a pleasing or useful shape for presentation.
Some are heat proof; others are not. Materials used to make moulds can include wood, metal, glass or plastic.
In some cuisines, pie tins are thought of as moulds rather than pans. For instance, the French refer to them as “moules à tarte”, meaning literally “pie moulds.”
Unmoulding a food item is thought by many cooks to be one of the more terrifying tasks in a kitchen, for fear that the food will stick to the mould or the shape lost or destroyed during the process.