Second, practice:

1. Wash black rice, millet, red beans and rice with clear water and put them into the pot.

2. Wash the yam, peel it, and cut it into yam slices with uniform size.

3. Add an appropriate amount of water to the pot, put the yam slices into the pot and start cooking.

4, don't stir with a spoon when cooking, so as not to paste the pot. If the porridge is sticky, you can turn off the heat and serve it.