All terms
Distillery glossary
Wine Gallon
A wine gallon is a standard liquid gallon (231 cubic inches) measured at 60°F, regardless of the spirit's proof. It is the physical volume, before converting to proof gallons.
Wine gallons describe how much liquid is in a barrel or tank; proof gallons describe how much pure alcohol that liquid represents. Distilleries record wine gallons at gauging and convert to proof gallons for tax and reporting using the spirit's proof.
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