
Butterscotch liqueur is a sweet flavoured liqueur made to imitate butterscotch, the confection of brown sugar and butter.
Aromas of warm brown sugar and butter lead into an intensely sweet, toffee-toned body with a thick, syrupy texture.
Poured as a sweet flavouring accent or as a defining dessert measure, it contributes high sweetness, viscous body and a low-strength spirit base; dosed in small measures when accenting, it is shaken or stirred and rarely needs additional sweetener.
As a small accent, another sweet liqueur can stand in, topping up sweetness with simple syrup and body with a sugar syrup if needed; as a defining flavour measure it is not substitutable, because the specific brown-sugar-and-butter character cannot be reproduced from an unrelated sweet liqueur.
Caramel liqueur
Butterscotch flavour derives from brown sugar and butter and characteristically lacks milk, whereas caramel is made from white sugar cooked to caramelisation and often includes milk or cream. The two are closely related sweet caramel-toned products but not identical.
Falling under the American 'schnapps' style, it is an inexpensive, heavily sweetened liqueur built by mixing neutral grain spirit with flavourings, added sugar and usually glycerine into a smooth, syrup-like drink. The butterscotch character it chases comes from a brown-sugar-and-butter confection, sometimes rounded out with cream, vanilla and salt.
Butterscotch as a confection has its earliest known recipes in mid-19th-century Yorkshire, England, where it was made as a boiled sweet.