The stainless steel insulated water cup can be used to boil tea, but you can't put tea tea in the stainless steel insulated water cup for too long, or it will rust and stain, so you should drink tea tea in ordinary times. The stainless steel insulated water cup is easy to dissolve heavy metals that exceed the standard after being put into tea tea for a long time. If the heavy metals exceed the standard, the risk of cancer will be increased. In addition, tea tea is also easy to erode into the cup, so you can learn about it.
 Can you boil tea with a thermos cup
 In fact, there is no conclusion about whether the tea made from the insulated cup is a carcinogen. The reason for the name of the carcinogen in the insulated cup at the support point is that the long-term touch of tea leaves with the insulated cup will cause chemical changes with chromium in the stainless steel plate, and the dissolved heavy metals will exceed the standard, which will increase the risk of cancer.
 This is just a hypothesis. There is no experiment in the medical field to prove that the acidity of tea can cause chemical changes with the metal materials in the thermal insulation cup. But even if the name of carcinogen is a rumor, it is not a healthy way to make tea with insulated cup.
 First of all, tea leaves are immersed in the sealed insulated water cup for a long time, which not only makes tea more and more thick, but also makes it bitter and astringent, affecting the taste. Secondly, vitamin C and other nutrients in the tea leaves will also be destroyed in the whole process, resulting in a significant reduction in the use value of the tea leaves.
 So, as our Chinese favorite healthy drink, how can we make tea leaves more nutritious? If you haven't mastered it yet, Webweaver has summarized many key links for you!
 How to make tea more scientifically
 Selection of water cup
 People have long known that insulated water cups are not suitable for tea brewing. In fact, disposable paper cups and disposable plastic cups are also best not to be used for tea brewing, because boiling water may cause some harmful substances.
 It is suggested that you should use traditional porcelain cups and glass cups to brew tea. If you are a tea enthusiast, let alone the tea made of purple clay pots!
 Impulse temperature
 The temperature of tea is also important. If the temperature is too low, the aroma and nutrients of tea leaves cannot be completely dissolved. If the temperature is too high, the nutrients such as vitamin C will be damaged; Therefore, it is the best practice to select a temperature of 80 degrees for soaking. This can not only ensure the mellow taste, but also prevent the nutrient elements from being damaged.
 Soaking time
 Many people think that the longer the tea leaves are soaked in boiling water, the more mellow the taste of tea will be. If it is simple to pursue perfect taste, then it is certainly OK. However, if you want to combine the nutrients of tea leaves, long-term soaking is not suitable, which will damage a variety of trace elements. The most appropriate time should be about 5 minutes.
 Impulse frequency
 Many people drink tea repeatedly. This kind of practice is not advisable. Several times, tea leaves are washed. Theanine, long-chain fatty acids and other substances in tea leaves will be oxidized, resulting in the insipidity of tea. In addition, because the tea leaves are idle for a long time, it is very easy to grow various microbial strains and bacteria in tea leaves, which will threaten physical and mental health.
 For the application of insulated water cup, please read on again!
 Taboos on the application of insulated water cups
 First, Chinese medicinal materials should not be put
 Pottery is the most suitable container for boiling Chinese medicinal materials, followed by pottery, followed by aluminum, and copper is the least suitable.
 Although the insulated water cup is made of stainless steel plate, it is not suitable for containing Chinese medicinal materials, which is very easy to cause sedimentation. Even some Chinese herbal ingredients will adhere to the surface of stainless steel plate.
 Second, acid-base health drinks
 Although stainless steel plate is resistant to corrosion and not easy to rust, it may still rust under special conditions, such as acid and alkaline natural environment.
 In China, it is required that the transfer amount of chromium in stainless steel plate containers should not exceed 0.4mg/dm. The inspection method is usually to put the stainless steel plate into the acetic acid solution, boil it for 30 minutes, and then place it for 24 hours for accurate measurement.
 When acidic solution is put into the thermal insulation water cup, it will cause reflection in the inner cavity of the thermal insulation water cup, resulting in total mixing of harmful substances and reducing the service life of the thermal insulation water cup.
 In addition, acid-base drinks do not need to be heated at high temperature, and it is OK to pay attention to the sealed storage. If it is kept in a warm water cup for a certain time, it will cause the outflow and destruction of vitamins in it. In addition, the acid-base health drinks will have higher acid value and worse taste if they are insulated.
 Third, Coca Cola or other carbonated drinks
 On the one hand, this healthy drink has corrosion, which will reduce the service life of insulated water cups and promote the total mixing of heavy metals that exceed the standard. On the other hand, many vapors contained in Coca Cola can be stored in a thermal water cup and evaporated, which will increase the working pressure in the thermal water cup, causing the mat to fail to open, or even the cup to burst due to shaking.
 In fact, the insulated water cup can hold bean paddles and milk, although it should be cleaned, sterilized and prevented from long-term storage. After long-term storage, bean paddles and milk are very easy to lose their original aroma.
 Common problems in application of insulated water cup
 1. The new water cup should be completely cleaned before application, preferably with a soft bristle brush to remove some dust inside. Especially pay attention to the cleaning of the cup cover.
 2. To prevent overfilling, overflow is very easy to cause burns.
 3. Prevent foam from entering boiling water.
 4. Prevent the microwave oven from heating immediately, otherwise it is very easy to cause explosion accidents.
 5. The water cup preventing steam leakage may not have thermal insulation.
 6. Listen to the water cup with your ears. If there is no buzz in the partition, the water cup may lose its thermal insulation, or it is not a thermal insulation water cup.
 Summary: It is not recommended to use insulated cups for tea brewing. Although there is no conclusion about whether they can cause cancer, it is not conducive to the nutritional composition of tea leaves. Therefore, it is suggested that when you drink tea, you should use a purple clay pot or a glass or porcelain cup to make tea. In addition to the fact that you can't boil tea, you can also remember not to put any acidic and alkaline healthy drinks and Chinese medicinal materials into the thermos cup!