Topic - Beer Coasters

A coaster, drink coaster, beverage coaster, or beermat is an object used to rest drinks upon. Coasters protect the surface of a table, or any other surface where a user might place a cup, from condensation created by cold drinks. A coaster on top of a beverage can also be used to show that a drink is not finished or to prevent contamination (usually from insects). Coasters can also stop hot drinks from burning the table surface.