1. Mix whole wheat flour, flour, yeast, and water.
2. Make dough and wait for fermentation.
3. After the dough is fermented twice as large, divide it and make buns.
4. Place the steamed buns in the steamer and wait until the buns feel light and light.
5. Turn on the heat, steam for 20 minutes to turn off the heat, simmer for 5 minutes before uncovering.
6. Thin-skinned stuffing!
It is not advisable to open the lid immediately after the flame is turned off, otherwise the buns will collapse.