Moulding starch is a type of starch that is used to create molds or shapes. It is often used in the food industry to create shapes such as biscuits, cakes, and pastries. Moulding starch is made from a variety of different starches such as cornstarch, tapioca starch, or potato starch. The starch is mixed with water and then heated until it forms a gel. This gel is then molded into the desired shape and left to cool. Moulding starch can also be used to create shapes from other materials such as clay or plaster.