Carrying a stainless steel or glass cup when going out can be used for brewing tea.

However, many believe stainless steel insulated cups are unsuitable for brewing tea, and glass cups are the best.

It can be said that opinions vary and depend on individual preferences. Stainless steel cups can be used for brewing tea, but there are significant differences between brewing tea in stainless steel and glass cups.

Many people use stainless steel cups for brewing tea, and stainless steel is known for its rust-resistant properties. When using an insulated cup for brewing tea, as long as it is not steeped for a prolonged period, it has some advantages compared to other cups.

Since tea leaves are rich in various nutrients such as proteins, fats, sugars, vitamins, and minerals, tea is a natural health beverage for most people. As long as it is not steeped in the stainless steel cup for an extended period, it can be enjoyed as a healthy drink. However, if tea is steeped for too long, nutrients like vitamin C in the tea leaves can be destroyed, and the health benefits of the tea may be reduced due to prolonged exposure to high temperatures.

It's not just tea leaves; soups, milk, herbal medicines, and other beverages should also not be kept in the stainless steel cup for too long. If you want to use a stainless steel cup for tea, it's recommended to brew it in a teapot, let it cool to a suitable temperature, and then pour it into the stainless steel cup for insulation.

Recently, a TV program reported that brewing tea can corrode stainless steel cups, releasing chromium that may harm human health. Several online media outlets have republished the program's content with alarming titles such as "Never use stainless steel cups for brewing tea! It's toxic!" This has attracted a lot of attention.

In some cases, stainless steel can rust, leading to chromium release. However, it must be emphasized that under normal usage conditions, stainless steel utensils that comply with national standards release minimal amounts of chromium, and there is no need to worry about it affecting human health.

On the other hand, using a glass cup for brewing tea allows one to observe the entire brewing process, including the up-and-down movement of tea leaves, the gradual unfolding of the leaves, and the color of the tea liquor. The drawbacks of glass tea utensils are that they are prone to breakage and can be hot to the touch, but they are cost-effective.

Brewing green tea in a glass tea vessel creates a misty and ethereal atmosphere in the cup, showcasing the beauty of tea leaves unfurling, creating an aesthetically pleasing and enjoyable experience.

Whether using a stainless steel cup or a glass cup, each has its advantages and disadvantages when brewing tea. When choosing, it's advisable to consider personal taste and health factors. Regardless of the type of cup chosen, it's important to moderate the steeping time, avoiding prolonged immersion to preserve the nutritional benefits of the tea leaves. In the enjoyment of tea, the emphasis should be on maintaining a balance between health and pleasure.