2. In addition, add 15g white sugar and 2g yeast to 200g flour, then pour 100g warm water, knead into dough, cover with plastic wrap, and knead until the surface is smooth after proofing. Roll the green dough and white dough into rectangular dough, and put the white dough on the green dough. Cut raw steamed bread evenly, put a non-stick pan pad in the steamer, put the raw steamed bread on it, cover it, and wake it for about half an hour. When it is done, boil it with high fire, steam it on medium fire 12 minutes, and uncover it for 5 minutes after turning off the fire.