1. Wash wormwood and set aside
2. Boil water in a pot, pour edible alkali to boil
3. Add the wormwood and cook for 15 minutes
4. Use a spoon to grind the wormwood into a puree
5. Pour flour in the basin, add wormwood, sugar, and yeast to knead the dough
6. Cover the dough with a damp cloth and let it stand for 2 hours
7. Put it in a steamer and steam for 15 minutes
8. Put it in a steamer and steam for 15 minutes
