Cooper is a skilled craftsperson who makes, repairs and maintains wooden barrels and other vessels used to store or mature wine, spirits, beer and other liquids. The workshop where barrels are made is called a cooperage. In French, a cooper is a tonnelier.
A cooper selects and prepares suitable staves, shapes them, assembles the barrel and fits metal hoops to hold the structure together. The staves are heated and bent to create the barrel’s curved shape, then the interior may be toasted over a controlled fire according to the producer’s specification. The cooper also prepares the heads, checks for leaks and ensures the barrel is fit for use.
Barrel size, oak species, forest origin, grain, seasoning, toast level and previous use all influence how a barrel interacts with wine. New oak can contribute more wood-derived aroma and tannin, while older barrels generally contribute less flavour. Barrels also allow limited oxygen exchange during maturation.
Example: a winery may order French oak barriques with a medium toast for a red Bordeaux blend, or larger, older barrels when a more neutral maturation vessel is desired.
The cooper builds and maintains the barrel. The winemaker selects the barrel type, toast, size and maturation plan to suit the wine. Their decisions work together, but the roles are distinct.
Chef’s note: cooperage is a skilled trade that directly influences barrel quality and consistency. Barrel origin and toast are useful details when assessing oak character in wine.
This term is one of hundreds covered in depth across OCS courses, learning paths, and 1-on-1 coaching with Chef Eric.
