Butterscotch is a type of confectionery whose primary ingredients are brown sugar and butter, although other ingredients are part of some recipes, such as corn syrup, cream, vanilla, and salt. The earliest known recipes in the middle 19th century used treacle (molasses) in place of or in addition to sugar.
Butterscotch is similar to toffee, but for butterscotch the sugar is boiled to the soft crack stage, and not hard crack as with toffee. Butterscotch sauce, made of butterscotch and cream, is used as a topping for ice cream (particularly sundaes).
The term butterscotch is also often used more specifically of the flavour of brown sugar and butter together, even where the actual confection butterscotch is not involved, such as in butterscotch pudding.