Mousse belongs to the jelly type of confectionery under the category of Western confectionery frozen confectionery. Generally composed of sugar, water (or milk), fruit juice, chocolate, gelatin (animal collagen, etc., focus), light cream (or whipped cream) and other ingredients. It is made after heating, mixing and freezing.
Mousse cake = mousse + cake.
Milk cake = A cake made with fresh milk as an ingredient. It is also a cake decorated with whipped cream.
The reason why mousse is more expensive than fresh milk cake, I personally think there are the following:
1. Mousse ingredients cost more,
2. Mousse process is more complex, the cost of time is higher,
3. Mousse nutrition is better and more balanced
4. Mousse is generally through the cup. Small molds. Or cut. Or have a variety of different color levels. Overall the decorative expression of mousse is more simple. More fashionable.