Toona sinensis leaves can be used to make natto without Bacillus natto. The specific operation method is as follows:

First, soak the soybeans one night in advance to save time when cooking.

Second, put it in a clear water pot.

Third, cook for about 40 minutes, and cook by hand until the soybeans are soft and rotten.

Fourth, remove the beans.

5. blanch the leaves of Toona sinensis.

6. Control the drying of soybean and Toona sinensis leaves.

7. Spread the Toona sinensis leaves in a clean container.

8. Spread soybeans on the leaves of Toona sinensis.

Ninth, cover soybeans with Toona sinensis leaves.

10. Seal the container with gauze. Leave it for three days.

Natto will be ready in 11 or 13 days.