Preparation materials: egg crust, sponge cake, cream mousse, blueberries, blueberry jam, powdered sugar

Step 1: Cut the sponge cake horizontally into 4 equal portions.
Step 2: Put the first layer of sponge cake as the bottom, spread a layer of cream mousse and some blueberries on the top, then put on an egg crust and spread some blueberry sauce.
Step 3: Repeat step 2 three times, the top egg skin does not need to be spread with jam, you can sprinkle some white sugar powder to decorate and finish.