Mousse cake is a kind of pastry with mousse powder as the main ingredient. The appearance, color, structure, and flavor variations are rich and more natural and pure, usually with the addition of cream and rennet to create a thick jelly-like effect.

The English word for mousse is mousse, which is a kind of custard-style dessert that can be eaten directly or used as a cake layer, and is usually made by adding cream and coagulant to create a thick, jelly-like effect. Mousse is phonetically translated from French. Mousse cake first appeared in the gourmet capital of Paris, France, the original masters in the cream added to play a stabilizing role and improve the structure, texture and flavor of a variety of excipients, frozen after eating the taste of its infinite, to become a cake in the very best. Mousse and pudding belong to the same kind of dessert, its nature is softer than pudding, melt in the mouth.