The method of using coix seed as the main ingredient 200g of winter melon peel coix seed soup 1. After washing coix seed, soak it in clear water overnight; Peel the winter melon for later use. 2. Add enough water to the casserole to boil, and add the drained coix seed rice to boil. 3. Turn to low heat and cook until cooked, about 20 minutes. 4. Add the winter melon skin and cook for 10 minutes.