Soak 50g of red kidney beans in warm water for 3-5h, and cook porridge with100g of rice.

Step 1: completely soak Coicis Semen in clear water.

Step 2: Red kidney beans should also be completely soaked.

Step 3: Put Coicis Semen and red kidney beans into a pressure cooker.

Step 4: Add rock sugar.

Step 5: Add enough water.

Step 6: Cover the pressure cooker, put it on the stove to boil, and then turn to low heat for 15 minutes.