What is Drink coaster?
A '''coaster''', '''drink coaster''' or '''beermat''' is an item used to rest [[Drink|drinks]] on. Coasters protect the surface where the [[glass]] or mug is put. Coasters put on top of a glass can show a drink is not finished prevent contamination (usually from insects). [[Restaurant|Restaurants]] and [[Public house|bars]] usually will have coasters out on their tables. They are used to protect the surface of the table. If they are made of [[cardboard]], they will absorb [[liquid]] that may drip along the glass. Beermats usually have [[Trademark|trademarks]] or [[Alcoholic drink|alcohol]] [[advertising]]. Bar mats have a similar function. They are rectangular pieces of [[rubber]] or absorbent material used to protect the countertop of a bar. [[Category:Drinks]]