The traditional way of brewing green tea is to brew it with hot water. Although the life style of making tea cool is not long, it is gradually accepted by everyone because of its certain benefits.

1. Convenient. Travel, mountain climbing or places without hot water, as long as there is pure water or mineral water, you can brew green tea. Herbal tea can not only quench thirst and relieve summer heat, but also save a lot of electricity and gas by brewing green tea with mineral water without heating.

2. Lowering blood sugar, tea polyphenols is the general name of polyphenols rich in tea, which has been proved to have the effects of lowering blood sugar, lowering blood fat, preventing hypertension, cerebral thrombosis and arteriosclerosis. Tea pigment is an oxidized polymer of tea polyphenols, which, like tea polyphenols, has certain preventive and therapeutic effects on diabetes. In addition, tea pigment also has the function of lowering cholesterol, and also has certain preventive and therapeutic effects on cardiovascular and cerebrovascular diseases and arteriosclerosis, a complication of diabetes.

When hot water is brewed, the polysaccharide with hypoglycemic effect in tea will be seriously destroyed, and theophylline and caffeine in tea will be easily soaked in hot water, which will not help to lower blood sugar.

However, because it takes a long time to make herbal tea, the polysaccharide components in tea can be fully leached, which has a good auxiliary treatment effect on type 2 diabetes.

3. Nutrition and health. Tea contains more than 700 kinds of substances with high nutritional value, but if brewed with boiling water, many nutritional values will be destroyed. Herbal tea won't. The antioxidant effect of catechin has been proved for a long time, and the free catechin is higher than hot tea soup when it is cold-soaked. It was found that with the increase of soaking time, the chemical composition content of cold tea soup increased, and the maximum change was within two hours, and the dissolution amount changed little after a certain time. After soaking for eight hours, except caffeine, other ingredients are higher than hot tea soup.

Herbal tea has both advantages and disadvantages. In short, you need to choose from different groups of people.