Beer Brewing

Glossary

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ULLAGE - The empty space at the top of a bottle, cask or barrel between the liquid and the top of the container. It is also referred to as headspace or airspace.

UNDERLETTING - Filling the space beneath the false bottom of the lauter tun with hot water before running off the sweet wort.

UNITANK - A stainless steel vessel in which the beer can be both fermented and lagered. Unitanlks have cone-shaped bottoms for allowing excess yeast to be purged out of the brew.