You can soak in water directly. It should be noted that it is not suitable to use water with excessive temperature when soaking lemonade. Excessive temperature will destroy vitamin C, and the water temperature should be as appropriate as possible. In addition, the soaked lemonade should not be drunk overnight, which may lead to the problem of bacterial growth. After slicing the lemon, soak it in warm water and add a little honey to taste better. In addition, you can add a little red dates and medlar.