Treacle is any uncrystallised syrup made during the refining of sugar. The most common forms of treacle are golden syrup, a pale variety, and black treacle, a darker variety similar to molasses. Black treacle has a distinctively strong, slightly bitter flavor, and a richer color than golden syrup. Golden syrup treacle is a common sweetener and condiment in British cuisine, found in such dishes as treacle tart and treacle sponge pudding.

Golden syrup or light treacle is a thick, amber-coloured form of inverted sugar syrup made by the process of refining sugar cane or sugar beet juice into sugar. It is used in a variety of baking recipes and desserts. It has an appearance and consistency similar to honey, and is often used as a substitute where honey is unavailable.