01
Tea
Making tea in a stainless steel thermos cup will not cause the migration of metallic chromium, nor will it cause corrosion to the stainless steel itself. But even so, it is not recommended to use a thermos to make tea, because tea is usually suitable for brewing, and long-term hot water soaking will destroy the vitamins in the tea, and will also reduce the flavor and taste of the tea.
02
Carbonated drinks and juices
Carbonated drinks, fruit juices, and some traditional Chinese medicines are mostly acidic, and they will not cause heavy metal migration if they are placed in a thermos for a short time. However, the composition of these liquids is complex, and some of them are highly acidic, and prolonged contact may corrode stainless steel. When using a thermos cup to hold carbonated beverages and other gas-producing liquids, avoid violent shaking to avoid a sharp increase in the pressure in the cup.
03
milk and soy milk
Milk and soy milk are both high-protein drinks that are prone to spoilage when kept warm for a long time. In addition, the protein in milk and soy milk is also easy to adhere to the wall of the cup, making cleaning difficult.