Frothy desserts are a type of dessert that is light and airy, often made with whipped cream or egg whites. Two examples of frothy desserts are mousses and syllabubs. Mousses are a type of dessert made with whipped cream, egg whites, and sometimes gelatin, while syllabubs are a type of dessert made with cream, sugar, and wine or spirits. Both mousses and syllabubs are light and airy, making them perfect for a light and refreshing dessert.