1. Squeeze the green juice from the spinach juice and add the flour.
2. Beat in an egg yolk.
3. Stir the batter thoroughly and set aside.
4. Squeeze the remaining egg whites into a few drops of lemon juice.
5. Add white sugar (white sugar is added in 3 times during the process of beating the egg whites).
6. Hit until hard foaming (you can stand up a small triangle).
7. Add the beaten egg whites to the batter.
8. Evenly pirate up, down, left and right (add in 3 times).
9. Cover the mold with greased paper and pour into the batter.
10. Cover with plastic wrap and steam for about 28 minutes after boiling.
11. Very successful, sweet and soft.
