Grain, often referring to barley specifically, that has not undergone the malting process. Irish whiskeys sometimes use a combination of malted and unmalted barley.

A vessel used to store wort after it has drained from the mash tun and before transferring it to the washbacks for fermentation. A distillery may use the same mash multiple times, mixing it with

A spirit that has been distilled three times in a pot still. Often used in Irish whiskey and some Lowlands Scotch whisky. The additional distillation results in a lighter spirit.

In American whiskey distilling, a type of pot still used for the second round of distillation. A thumper receives alcohol vapor, whereas a doubler receives spirit that has already been cooled into a liquid.

A whiskey made in Tennessee, meeting the same legal requirements as a bourbon, with the added requirement of filtration through sugar maple charcoal, referred to as the Lincoln County Process (with the exception of one

The final spirit produced from a spirit still at the end of the distillation process. These fusel oils are low in alcohol and can be discarded or redistilled. Also knowns aftershots or feints.

Refers to American whiskey made from a grain mash, distilled to no more than 80% ABV, and aged for at least 2 years after entering the barrel at an ABV of no more than 62.5%. The

The apparatus used to distill spirits by vaporizing alcohols to separate them from water. Stills are usually made of copper, which helps strip spirits of unwanted flavor and aroma compounds. The two most common types