Why is steamed bread hard?

Wake the steamed bread twice before cooking, so that the steamed bread will be soft and the skin will not be hard. Here are some practices:

Preparation materials: 250g whole wheat flour, 125g warm water, 3g baking powder.

Production steps:

1. Prepare ingredients, pour baking powder into warm water and let stand 15 minutes.

2. Pour the water into the flour

Step 3 Knead into dough

4. Cover with a wet cloth to wake up and ferment to twice the size.

Step 5 mention kneading dough on the chopping board

6. Knead into your favorite shape

7. Warm water in the pot, put the steamed bread in the pot for fermentation for 15-20 minutes, and send it to 1.5-2 times the size.

8. Steam over high fire for 20 minutes.

9. Finished product drawing