Is a stainless steel insulated cup suitable for holding coffee?

Is a stainless steel insulated cup suitable for holding coffee?
Stainless steel insulated cups are not suitable for holding coffee.
There is an acidic substance called tannic acid in coffee, which can cause mild damage to the insulation cup and easily react with stainless steel material. It can also disrupt the taste of coffee.
Coffee is a beverage made from roasted and ground coffee beans. As one of the three major beverages in the world, it is the main popular beverage along with cocoa and tea.
The coffee tree is a perennial evergreen shrub or small tree belonging to the Rubiaceae family. Daily coffee is made by combining coffee beans with various cooking utensils, and coffee beans refer to the kernels inside the coffee tree fruit that are baked using appropriate methods.
A standard cup of coffee should not taste bitter. A qualified barista will rigorously follow every step of coffee making, and the coffee presented to the customer will exhibit varying degrees of sweetness, acidity, aroma, or cleanliness in taste.
Regardless of the type of coffee, freshness is an important factor affecting its quality. When choosing, grab one or two coffee beans and chew them in your mouth. If there is a crisp sound, it indicates that the coffee beans are not damp, and the coffee beans with fragrant lips and teeth are the top quality. However, it is best to pinch them with your hands to feel if they are solid, and never buy empty shell coffee.
Freshly roasted coffee beans are not suitable for immediate consumption. Generally speaking, the best drinking period for coffee is one week after frying, when the coffee is freshest and exhibits the best aroma and taste.
In addition, the flavor of coffee beans is another consideration. When choosing coffee beans as an expert, what is not visible is the size of the particles. Coffee beans may have different sizes in terms of appearance, such as the characteristic sizes of Ethiopian beans, which is a normal phenomenon.
Secondly, there is color difference in the color of sun dried beans, whether they are raw or cooked, which is a normal phenomenon. Do not unilaterally interpret the superficial opinions in books or materials, and generalize all coffee beans. Relatively speaking, coffee beans that are medium to deep roasted are more likely to produce oil than lightly roasted beans, while lightly roasted beans do not produce oil or produce a small amount of oil. In short, when choosing coffee, one should pay attention to its freshness, aroma, and aging.