Why does the bar put a coaster under the beer glass?

The most important role is to drain and prevent slippage. When a glass of beer is brought to the front, there is foam and water (condensed water droplets on the wall of a cold beer glass). If there is no coaster, there will be water at the bottom of the glass, which prevents drinking. People toast frequently. In fact, the role of coasters is still very big, especially for people who often drink, if you sit down and drink at a table without coasters, you will feel that the whole person is not good.

In addition, the coaster extends to another level in the bar culture. You can play some games on the back, and you can also jot down the Tel.. Mail ... or other things of friends you met during the drinking process.

Reduce the friction between the cup and the table, the friction is very unpleasant, and keep the bar clean. Easy to clean.