1. 70 grams of cake flour, 20 grams of corn starch, 3 eggs, 200 grams of plain yogurt, and 30 grams of white sugar. Accessories: 5 drops of lemon juice.

2. Prepare various ingredients.

3. Separate egg yolk and egg white.

4. Add homemade yogurt to the egg yolk.

5. Stir evenly and add vanilla extract.

6. Sieve in corn starch.

7. Sift in the cake flour.

8. Stir evenly until smooth and smooth without any particles, set aside.

9. Add a few drops of lemon juice to the egg whites.

10. Add white sugar in 3 times.

11. Send to the big hook state.

12. Add the beaten egg whites to the egg yolk paste in 2 batches.

13. Use the mixing and cutting techniques, and add the egg whites each time after they are dissolved into one.

14. Wrap the bottom of the live-bottom mold with tin foil.

15. Pour in the mixed batter.

16. Put it into the preheated oven, pour hot water on the baking sheet, put the cake mold on it, and bake at 120 degrees for 60 minutes.

17. Take out the baked cake, place it on the table about 20CM away, and drop it down several times.

18. Remove from the mold after cooling.