2. Mix warm water and sugar with spontaneous wheat flour and mix well.
3. Knead into a smooth dough.
4. Fermentation at room temperature for 30 minutes. The temperature is 27℃.
5. Add corn oil and common flour to the chopping board (spontaneous wheat flour cannot be used at this time) and knead well.
6, smooth section, no bubbles. This is the key to the good-looking steamed stuffed bun skin.
7, wrapped in cold water, 15 minutes. Simmer for one minute, then bring to a boil.