Some people cling to the belief that coffee is a kind of acidic liquid that may react with the stainless steel, changing the authentic flavor of coffee, damaging the tumbler cup itself, and releasing harmful elements. On the contrary, coffee will never react with the stainless steel, and the PH level of a standard coffee is between 4.5 to 6.0, close to the neutral level. It may surprise you that the PH level of a bottle of coke is nearly 2.6! Some people tend to add milk to their coffee for better taste and nutrition. It is okay as milk is more neutral than coffee in terms of the PH level.
So the answer of this question is undoubtedly “yes”. There is no chemical reaction between hot coffee and stainless steel. Besides, stainless steel will never impart smell to coffee, offering you the original pure taste, which is hardly realized by a paper cup or a plastic cup.
If you are still worried about drinking coffee with a stainless steel mug, just have a look at the coffee machine that provides you with delicious hot cappuccino and latte. In fact, the major part of a coffee machine adopts food grade stainless steel 18-8 (SUS304) and coffee made by the machine is inevitably exposed to the stainless steel for a certain period of time. If the stainless steel material is incompatible with coffee or milk, why is it still extensively adopted?
Basically, an insulated stainless steel tumbler is a beverage container that is suitable for holding liquids such as carbonated drinks, coffee, tea and of course, water. It is normally equipped with a straw (either of stainless steel or BPA-free plastics), allowing you to consume the liquids in it more conveniently. Nowadays, insulated tumblers are designed into fashionable and slender shapes, and with benefits such as portability, versatility and durability, they are also adored by office men & ladies as well as outdoor sports enthusiasts.
