A mousse is a prepared food that incorporates air bubbles to give it a light and airy texture. It can range from light and fluffy to creamy and thick, depending on preparation techniques. A mousse may be sweet or savory. Dessert mousses are typically made with whipped egg whites or whipped cream, and generally flavored with chocolate or puréed fruit. For savory mousse, hard boiled egg, fish or liver may be used.