Soft Creamy Chocolate Mousse Cake

Chocolate mousse cake recipe Chocolate sponge (40 x 25. 5 cm or 15 x 10 in pan); finished cake: 16 cm, 6in square pan 1 cup 236ml 3 egg white 60g sugar (1, 4 cup + 1, 2 tbsp) 25g cocoa powder (1, 4cup) 45g hot water (3tbsp) 50g cake flour (1, 2 cup 1 tbsp) 3 egg yolks 20g sugar (1. 5 tbsp) 20g vegetable oil Chocolate mousse 70g dark chocolate chopped 2 egg yolks 30g sugar (2. 5 tbsp) 100g warm milk (1, 2 cup) 1 tsp instant coffee 1. 5g gelatine sheet x 3 250g heavy cream soft peaks (1 cup) 15g sugar (1 tbsp) The chocolate glaze 70g cocoa powder (3, 4 cup) 120g hot water (1, 2 cup) 120g heavy cream (1, 2 cup) 160g sugar (3, 4 cup) 1. 5g gelatine sheet x 3 white chocolate and strawberries for garnishing Kitchenware (Amazon affiliate links) Digital food scale: Square cake ring (6in, 16cm): Reusable parchment baking sh