Barrel
Wooden container used to store spirits, normally made of oak though other woods are also used.
Technically, a barrel is a type of cask that holds 36 gallons.
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During the barrel aging process, some of the following chemical changes occur in the spirit:
- The aldehyde level changes
- The color changes
- The concentration of esters changes
- The acidity changes
- The concentration of furfural changes
- The concentration of fusel oils change
- The pH changes
- The amount of solids change
- The proof changes
- The concentration of tannins change
- The total acidity changes