This video shows how to make a chocolate and coffee roll cake using rice flour. First, mix instant coffee, egg yolks, vegetable oil, and rice flour to make the coffee batter, and separately whip egg whites to make meringue. Fold the meringue into the batter in several batches, spread it on a baking sheet, and bake. Next, mix melted sweet chocolate and milk in a double boiler, and add whipped cream and granulated sugar to make chocolate cream. Make cuts in the baked cake, spread with chocolate cream, roll it up, and chill in the refrigerator. Finally, decorate with melted chocolate and decorate with chocolate cream from a piping bag. Because it uses rice flour, you can enjoy a light and moist texture, and it is a beautiful roll cake with an exquisite combination of coffee aroma and rich chocolate flavor.