Don't drink coffee from a metal cup.

When looking for a coffee cup for our favorite coffee, we always turn our eyes to those colorful quilts first. Senior baristas tell us not to drink coffee from metal cups. So, what are the cups that can't be used with coffee?

The metal elements contained in the enamel cup composition are usually relatively stable, but in acidic environments, they may dissolve out, and it is not safe to drink acidic beverages such as coffee and orange juice.

Disposable paper cups or hidden potential carcinogens

Disposable paper cups only look sanitary and convenient, in fact, the product qualification rate cannot be judged, whether it is clean and sanitary, and cannot be identified with the naked eye. From an environmental perspective, disposable paper cups should be used as little as possible. Some paper cup manufacturers add a lot of fluorescent whitening agents to make the cup look whiter. And it is this fluorescent substance that can cause cell mutation, once it enters the human body, it will become a potential carcinogenic factor; Secondly, those unqualified paper cups are generally soft, easy to deform after pouring water, some paper cups are poorly sealed, and the bottom of the cup is easy to seep, which is easy for hot water to burn hands; What's more, when you gently touch the inside of the paper cup with your hand, you can feel the fine powder on it, and the touch of your finger will turn white, which is a typical inferior paper cup.

Plastic cups are the easiest to hide dirt

Plastic cups should also be unpopular. Because plastics often add plasticizers, which contain some toxic chemicals, when plastic cups are filled with hot water or boiling water, toxic chemicals are easily diluted into water, and the internal microstructure of plastics has many pores, which hide dirt. Therefore, when purchasing plastic cups, we must choose a cup made of food-grade plastic that meets national standards.

Beware of heavy metal poisoning when using colorful cups

Colorful cups are attractive, but best not used. Because there are huge hidden dangers in those bright pigments, especially the inner wall coated with glaze, when the cup is filled with boiling water or acid, alkaline drinks, toxic heavy metals such as lead in these pigments are easily dissolved in the liquid, people drink into the liquid with chemicals, it will cause harm to the human body.

The Healthiest Material-Glass

Of all the glass materials, glass is the healthiest. Glass in the firing process does not contain organic chemicals, when people drink water or other drinks with glass, do not worry about chemicals will be drunk into the stomach, and glass surface smooth, easy to clean, bacteria and dirt is not easy to breed in the glass wall, so people drink water with glass is the healthiest and safest.

However, although the glass does not contain chemicals and is easy to clean, because the glass material has strong thermal conductivity, it is easy for the user to accidentally burn himself. If the water temperature is too high, it may also cause the cup to burst.

Ceramic cups without colored glaze are both heat preservation and safety

Drinking water is preferred without colored glaze coated ceramic cups, especially the inner wall to be colorless. Not only safe material, high temperature resistance, but also relatively good insulation effect, drinking hot water or tea is a good choice.