A cake with 4 bottles, without baking. My guests were surprised by the outcome!

A cake with 4 bottles, without baking. My guests were surprised by the outcome! Ingredients: sponge fingers - 200 g (7 oz) milk - 150 ml ( fl oz) for the strawberry sauce: strawberries - 500 g ( oz) hydrated gelatine - 20 g (0.7 oz) ( 150 ml ( fl oz) water)