Glassware

Rocks / Old Fashioned

The short, heavy-based tumbler spirit-forward drinks are served over ice in. Capacity is to the brim; a drink is poured well short of it.

An empty heavy-based tumbler in smoke-grey glass, straight-sided, photographed against a pale ground
Whiskey Tumbler MET 176273.jpg by New England Glass Company
CC0 · Cropped, white-balanced, graded and re-encoded to WebP by eXir.

An empty heavy-based tumbler in smoke-grey glass, straight-sided, photographed against a pale ground

Capacity

To the brim300 ml
cubed ice displaces130 ml
block ice displaces130 ml
crushed ice displaces139 ml

Solid ice only: the liquid fills the gaps between pieces, so what has to be subtracted from the glass is the ice itself. Cubed assumes six to eight tray cubes near 2.5 cm; block assumes one 5 cm cube, which is why the two land in the same place from opposite directions. Crushed is taken as 7% above cubed: loose crushed ice weighs about 593 to 640 kg per cubic metre against 917 for solid ice, roughly 65% solid, where loose cubes run about 61%.

Every drink below was checked against this figure at build time. A recipe that does not fit its stated vessel fails the build rather than shipping.