I like to make a pot of tea and drink it slowly, but often I can't finish it, so I can only leave it overnight and drink it the next day. A lot of people say that overnight tea breeds bacteria and produces nitrites so you can't drink it, is this true?

As long as it is properly preserved, overnight tea can be A used. Many people worry about which will produce nitrite, in fact, do not have to. CCTV reporter has done experiments, a cup of tea brewed 12 hours, a cup of tea brewed 24 hours and a cup of tea just brewed to the Beijing Nutrition Research Institute for testing. The results show that the placement time of 12 hours and 24 hours of tea and just brewed tea, nitrite content did not change significantly, the highest content is only about 1/4 of the national drinking water standards.

As for the breeding of bacteria, tea in the sugar and amino acid content is very low, and is not a good bacteria "medium", if the lid, the air bacteria are difficult to fall into the cup, do not have to worry too much.

So how long can the tea generally be placed without deterioration? How to keep tea better?

How long will deteriorate this problem is not conclusive, which is closely related to the preservation of the environment, the condition of the tea, tea varieties and other factors, but if there is a strange smell or color, texture and obvious changes, or do not drink it as well.

The undrinkable tea is recommended to use the lid or plastic wrap closed containers, and then placed in the refrigerator to save, 8 to 12 hours will not generally deteriorate, after all, one of the fashionable cold brew tea method is to add cold water in the container with the tea, and then put into the refrigerator to soak the extract for 8 hours.