The possibility of tea making with stainless steel thermos.
Now tea drinking has gradually become a habit in people's life. Many manufacturers have also identified this business opportunity and launched various stainless steel thermoses that can be used to make tea. Some of them claim that stainless steel thermoses are particularly good for tea making, however, this is not correct.
The stainless steel thermos is made of 304 stainless steel, which has excellent corrosion resistance and good rust resistance. It also has good corrosion resistance to alkali solution and most organic and inorganic acids.
However, tea contains a lot of tannic acid, theophylline, aromatic oil and a variety of vitamins. It is only suitable for brewing with 80 degree water. If you use a stainless steel thermos to make tea, it will make the tea soaked in high temperature and constant temperature water for a long time, just like boiling it with a warm fire. A large number of vitamins in tea are destroyed, aromatic oil is volatilized, tannic acid and theophylline are leached in large quantities, which not only reduces the nutritional value of tea, but also makes tea juice odorless, bitter and astringent, and increases harmful substances. So it is not suitable for tea to be soaked for a long time.
The above data show that it is not feasible to make tea with stainless steel thermos. If you like to drink tea, you can first make tea, and then separate the tea-leaves and pour it into the stainless steel thermos, which will be safer and healthier.
