There is

black tea to nourish the stomach. Tea polyphenols contained in tea have astringent effect, which has a certain stimulating effect on the stomach, and it is more irritating on an empty stomach, so sometimes drinking tea on an empty stomach will make you feel uncomfortable. Black tea is made by fermentation and baking, and tea polyphenols undergo enzymatic oxidation under the action of oxidase, which reduces the content and the irritation to the stomach.

Black tea can nourish the stomach instead of hurting it. The oxidation products of tea polyphenols in black tea can promote human digestion. Drinking black tea with sugar and milk often can diminish inflammation and protect gastric mucosa, and also has certain effect on treating ulcers. However, black tea is not suitable for cold drinking, which will affect the effect of nourishing and warming the stomach, and may also reduce the nutritional content because it is left for too long.

Extended information:

The water temperature for brewing black tea is generally considered to be around 8℃. It is reported that the water temperature of high-grade delicate tea is 95℃ when it is fragrant and 8℃ ~ 85℃ when it is brewed. Only in this way can the tea soup be clear and not muddy in color, mellow but not dull in aroma, fresh and refreshing in taste and bright but not dark in leaf bottom, which makes people drink it delicious and emotional.

However, this has something to do with the quality of black tea. If the quality of tea is better, the higher the water temperature will not affect the taste and foam resistance of black tea after brewing. For example, when the water temperature of Zhengshan race with better quality reaches 1℃, its soup color and brewing times are not affected at all.

Although the brewing time of tea varies greatly, it is related to the type of tea, the temperature of tea, the amount of tea used and the drinking habits. However, because the leaves of black tea are tender, they should not be soaked for a long time. Usually, in brewing, tea artists stress fast-forward and fast-out. After the tea is injected, it is quickly poured out, and the soaking time is often only a few seconds.

Reference: People's Daily Online-Nourishing Stomach and Preventing Colds It is good to drink black tea alternately in autumn and winter.