The production method and steps of distiller's grains are as follows:

1. Wash round glutinous rice and soak it in clear water for one night, then drain the water and steam it in an autoclave for 2 minutes, then let it cool

2. Stir the cooled glutinous rice evenly with chopsticks.

3. Stir 4g of sweet wine koji with 25g of pure water, stir it constantly with chopsticks, and pour the liquid into the cold glutinous rice.

4. After stirring evenly, flatten the glutinous rice, dig a small hole in the middle, and sprinkle some dry distiller's yeast around the small hole

5. Then seal the bowl with plastic wrap, cover it and let it stand still.

6. Due to the high temperature, the distiller's grains were successfully fermented in one and a half days, which was sweet and rich in water. If the temperature is low, it takes longer to ferment.