Lemonade is not recommended to be made with boiling water, it is recommended to be made with water that is on the warmer side or cold water. Lemon water if you use boiling water to soak, may make the lemon in the vitamin C and other nutrients were destroyed, affecting the absorption of nutrients, and may make the lemon in some of the bitter solutes are stimulated, resulting in a bitter flavor affect the taste. If you use cold water to soak lemons, the aromatic flavor in lemons to stimulate a longer time, but its taste is better. In order to stimulate the flavor of lemons, but does not lead to the destruction of vitamin C, it is recommended to boil the water, naturally cooled to 40 ~ 60 degrees before soaking lemons. Although lemon is rich in vitamin C, but lemon taste acidic, it is not recommended to drink too much, otherwise it may lead to excessive acidity in the stomach, especially with gastroduodenal ulcers, gastroesophageal reflux and dental caries patients should try to drink less.