1. Add oil to the basin, add appropriate amount of water and stir well, add 350g flour and soften it, knead it into blocks, cover it with a wet cloth after kneading, and then add the remaining 150g dry flour one after another after softening the dough, knead it into blocks and cover it with a wet cloth.

2. Divide the dough into small pieces according to the amount, knead it into a circle and pat it flat, put a little salt in the center of the dough, wrap it around the mouth, roll it into a small round support, and carve a pattern on it, which is the "oven bun".

3. Put the oven steamed bread on the fire. When the dough becomes hard and slightly fire-colored, stick a few small holes in the middle of the steamed bread with a needle and turn it over twice. It can be eaten when the dough is yellow and cracked.