Put 1 kg 500g angel baking powder.

Flour: baking powder = 100: 1

This steamed bread is loose and big.

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I recommend you to read the following article, which is comprehensive and practical.

How to make steamed bread white, loose and fragrant?

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How to make dough loose and big?

There are many ways to make steamed bread. Choosing flour is also very important. Can't choose flour with too high gluten. For example, flour used for making bread cannot be used for making steamed bread.

Southern steamed bread (with a sweet taste) uses low-gluten flour, and when buying flour, it is usually marked as pastry powder on the flour bag. The making method of the steamed bread is as follows:

Formula: 100% flour, 10~20% sugar, about 42% water, 0.8~ 1% yeast, 1% baking powder (5% milk powder or 5% oil).

Note: brackets can be added or not, which will taste much better.