2. Separate the egg yolk from the protein

3. Add oil and milk to the egg yolk and mix well

4. Mix cocoa powder with flour and sieve for later use

5. Sieve the flour mixed with cocoa powder into the egg yolk and mix well with a spatula

6. Add sugar into the protein in three times and send it to wet foam

7. Then mix the stirred egg yolk liquid with the remaining two-thirds of the beaten egg whites evenly

8. spread oil paper on the baking tray, pour in the cake liquid, and shake out big bubbles vigorously

9. preheat the oven at 15 degrees and bake for 2 minutes

1. hang the baked cake upside down on the baking net, tear off the oil paper by heat and cool it

11. coat a layer of salad on one side of the cake.