2. Wash kudzu root, cut it into pieces, add water and grind it into pulp, take starch after precipitation, dry it in the sun for later use, and wash the japonica rice.
3. Put the japonica rice into the pot, add appropriate amount of water, boil it with strong fire, and then cook it with slow fire. When the rice is half cooked, add kudzuvine root powder, and then continue to cook with slow fire until the rice is rotten into porridge.