1. The egg whites are separated from the egg yolks. Remember that the egg whites should be oil-free and water-free. The egg whites are added with lemon juice, and the egg yolks are added with sugar and baking powder.
2. Stir the egg yolks and beat the egg whites.
3. Mix the egg whites and egg yolks, sift into the low powder, and mix well.
4. Put it in a piping bag and squeeze it onto the baking tray.
5. The oven is 170 degrees, and the fire is about 15-20 minutes. Bake and let cool, squeeze the chocolate sauce to decorate, sieve some powdered sugar if you like.
