Triple chocolate mousse cake vote now PreviousNext DessertVery Easy1 h 10 m Send this recipe to a friend Print this page Ask a question to the author Post your photo of this recipe Ingredients 5 For the bottom layer: 6 tablespoons . unsalted butter, cut into 6 pieces (plus extra for greasing the pan) 7 ounces. bittersweet chocolate, finely chopped ¾ teaspoon. instant espresso powder 1½ teaspoon. vanilla extract 4 large eggs, separated Pinch of salt 1/3 cup light brown sugar, packed For the middle layer: 2 tablespoons . cocoa powder, preferably Dutch-processed 5 tablespoons . hot water 7 ounces. bittersweet chocolate, finely chopped 1½ cups heavy cream 1 tablespoon. granulated sugar Pinch of salt For the top layer: ¾ teaspoon. powdered gelatin 1 tablespoons . water 6 ounces. white chocolate, finely chopped 1½ cups heavy cream For garnish: Chocolate curls or cocoa powder View the directions