The specific steps of baking soda to make dough:
1, baking powder with warm water of about 35 degrees, fully dissolved and set aside. Put three or two baking soda in a catty of flour, that is, the ratio of 10:3.
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2. Pour 1 kg flour into the basin, pour in warm water soaked with baking powder, then pour in 1 vinegar, and knead the dough for 15 minutes.
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3. Ferment in a warm and humid place.
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4. Mix the fermented dough with flour, knead and shape it, and then put it in a baking tray or steamer for two times of fermentation, which should not be less than half an hour. So it's done.
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