Mix flour, soba noodles, dry yeast, sugar, salt, and salad oil evenly
Add warm water, stir into a block, knead into a smooth dough, cover with plastic wrap for the first time for 5 minutes.
Knead the dough into two square doughs (self-considered that the second dough is not in place yet)
Rolling up a round bar
Cut into a green body with a knife
Place in a steamer covered with gauze and cover with a lid for 30 minutes.
After 30 minutes of bursting
The fire will boil the water and turn to medium heat. Steam for 5+13 minutes, turn off the heat for 5 minutes.