The materials that need to be prepared in advance include: 90g of rice, 400g of sweet potato and appropriate amount of water.

First, soak rice in clear water for 2 hours.

Second, put a proper amount of water in the rice cooker.

Third, add the soaked rice, cover it and start cooking.

Fourth, the sweet potato is washed, peeled and cut into pieces for later use.

5. 10 minutes later, put the sweet potato pieces into the pot and cook them.

Six, cook for half an hour before serving, so that the porridge has been cooked.