Hard sauce

Hard sauce is a sweet, rich dessert sauce made by creaming or beating butter and sugar with rum (rum butter), brandy (brandy butter), whiskey, sherry (sherry butter), vanilla or other flavorings. It is served cold, often with hot desserts.

It is typically served with plum pudding, bread pudding, Indian pudding, hasty pudding, and other heavy puddings as well as with fruitcakes and gingerbread.