Assembling a cake in a ring.
Soak the sponge cake, put a little whipped ganache on the bottom, smooth. Make a side, put frozen strawberry cream with mousse in the middle. Cover with whipped ganache and place a second sponge cake on top. Saturate, apply some whipped ganache to the bottom. Smooth out, make a side, put frozen strawberry cream with mousse in the middle. Top with whipped ganache and cover with the last soaked biscuit.
Refrigerate for 2 hours. Then remove from the ring.