Efficacy and function of water chestnut: Water chestnut porridge, also known as water chestnut, has been called "underground Sydney" since ancient times and "Jiangnan Ginseng" in the south. In dry winter, eating water chestnut is not only a taste enjoyment, but also a dietotherapy effect. Water chestnut is a cold food, which can clear away heat, reduce fire, relieve sore throat, eliminate phlegm and supplement nutrition. However, water chestnut grows in the soil, and there may be more bacteria and parasites attached to the skin and inside, which is not suitable for raw food. It is better to wash and cook porridge. Cooked water chestnut is sweet, which can supplement the nutrition of whole grains and play the role of clearing away heat and resolving phlegm. Raw materials: water chestnut, rice each 100g, proper amount of sugar. Practice: Water chestnut is washed, peeled and cut into pieces for later use. Wash the rice first, add some water to cook the porridge, add water chestnut and sugar when it is almost cooked, and cook the porridge until it is cooked. Or wash the water chestnut, juice it, and when the porridge is cooked, put it into the porridge with white sugar and cook it. Tip: Because water chestnut is cold and difficult to digest, eating too much can easily cause bloating. Children and people with weak digestive ability should not eat more, and people with spleen and stomach deficiency and cold should also eat carefully. Moreover, be sure to peel or wash before eating.