Mix flour, yeast, and sugar together.
Add warm water and oil gradually.
Knead dough until smooth and elastic.
Let rise for one hour covered.
Cook beef with garlic until browned.
Add soy sauce, sesame oil, ginger.
Cool filling completely before using.
Divide dough into twelve equal portions.
Roll each piece into small circles.
Place filling in center carefully.
Seal edges by pinching together.
Steam buns for fifteen minutes.