This video shows how to make chocolate cream sandwiches. First, prepare a fluffy chocolate sponge cake by mixing cake flour and cocoa powder into an egg yolk base, adding whipped egg whites, and baking it in the oven. For the cream, mix melted white chocolate (melted in a double boiler), heavy cream, sweetened condensed milk, and vanilla extract, then chill and solidify it in ice water. Sandwich the cream between the baked sponge cakes, chill in the refrigerator until firm, then cut and shape into triangles to finish. It is also mentioned that it is delicious frozen and eaten like ice cream.