Materials:
3 eggs, 50g flour,
Cocoa powder 10g
60g of sugar, milk 10g, 4g of baking powder (optional), salad oil 10g, 2-3 drops of white vinegar.
Practice:
1, separate egg yolk from egg white, add half of sugar to egg yolk, and mix well with milk and salad oil;
2. Sieve the flour with baking powder and cocoa powder (you don't need it without a sieve. ) Pour it into the egg yolk solution of the first method and mix well again;
3. Add white vinegar to the egg white, and add the remaining half of the sugar until the egg white is frothy. Add the remaining sugar when the egg white turns white and begins to swell. Finally, beat until the chopsticks can stand in the egg white (be sure to make it well, or the cake will not swell even with baking powder).
4. Mix the second and third practices, and pay attention to mixing them up and down with a shovel, not in one direction, so that the cake will become stiff and not fluffy;
5. Take a vessel that can be heated in the microwave oven, touch the cooking oil on the four walls, pour it into the fourth method, bite it in the microwave oven for 6-7 minutes, cool it and release the mold.
I hope I can help, but you must know that it is definitely not as delicious as the oven, and it will be delicious only when it is cold, or it may smell like eggs when it is hot.