Rum raisin sauce is a rich and flavorful sauce made with rum-soaked raisins. It has a sweet and tangy taste that pairs well with desserts like ice cream, cakes, and bread pudding. The rum adds a warm and aromatic flavor to the sauce, while the plump raisins provide a chewy texture. This sauce is easy to make and can be stored in the refrigerator for up to a week, making it a versatile and delicious addition to any dessert.