1. Add 30 grams of sugar to the egg yolk and beat until slightly white.
2. Add salad oil and stir well.
3. The coffee powder is boiled with hot water.
4. Add the egg yolk paste and stir well.
5. The appearance after mixing.
6. Add 50 grams of sugar to 3 egg whites and beat them until they are almost dry foaming.
7. Dig 1/3 beaten egg whites into the mixed egg yolk paste.
8. Stir evenly, then pour it back into the beaten egg white bowl.
9. Stir evenly.
10. Pour in the sifted low flour.
11. Mix into a batter with no small particles and a texture.
12. Pour into the mold, the surface is slightly flattened.
13. Bake in the oven at 200 degrees for about 13 minutes.
14. Make a few knives on the surface and brush with coffee wine sugar liquid.
15. Spread the whipped coffee cream.
16. Roll it up and put it in the refrigerator for more than 30 minutes.
17. Just slice it.
18. Delicious
