If it is cooked, cook it for about 10 minutes, and the color of the cooked horseshoe will deepen. If you steam it, or make dessert, it usually takes about half an hour, so the water chestnut will be soft and rotten and easy to crush. If you want to stir-fry, add water chestnut and stir-fry for a few minutes before you can eat out of the pot. However, water chestnut is a cold food. For people with body cold or spleen and stomach deficiency cold, they should reduce their consumption to avoid causing adverse reactions.