Coasters help keep the condensation from drinks from leaving water marks behind. You can see this effect on your coffee table at home and you might not think much of it. But the countertops at the bar needs to be kept presentable.

Do you really need coasters?

You need a coaster to avoid unsightly water rings and marks on your tables from “sweaty drinks” like beer, soda, water, and juice. These water rings form due to the condensation on the cup, bottle, or mug. If the temperature of your cold drink is below dew point, the water will condense as liquid to the surface.

What makes a good drink coaster?

Absorbent materials: While coasters come in a wide variety of materials, from cotton to cork, some of the most absorbent choices are felt and porous stones like ceramic and sandstone. If you go with one of these materials, your coasters will be able to properly manage any condensation that runs off your glass.