The Pithy Bar

Rocks glass

A short, straight-sided tumbler with a heavy base and a wide mouth, for spirits over ice.

The weight is the working part. A thick base holds cold long enough that a single large cube melts slowly instead of watering the drink down. The wide mouth is what lets you use one: a big cube has less surface for its size than a handful of small ones, so it chills without diluting as fast.

It goes by several names and they all mean this glass. Old fashioned glass is the formal one, after the drink. Lowball is the older term, said against a highball. Whiskey glass is the same thing again. A double old fashioned is this shape made larger, holding roughly 35 to 47 cl against the usual 18 to 30.

Capacity
~24-35 cl

Served in this glass