Canadian whisky a small amount of rye grain. Historically, in Canada, whisky that had some rye grain added to the mash bill to give it more flavour came to be called "rye". The regulations under Canada's "Food and Drugs Act" stipulate the minimum conditions that must be met in order to label a product as "Canadian whisky" or "Canadian Rye Whisky" (or "Rye Whisky") — these are also upheld internationally through geographical indication agreements. These regulations state that whisky must ""be mashed, distilled and aged in Canada"”, ""be aged in small wood for not less than three years"", ""contain not less than
Barrel the much lower cost. Sherry is stored in casks made of North American oak, which is slightly more porous than French or Spanish oak. The casks, or butts, are filled five-sixths full, leaving "the space of two fists" empty at the top to allow flor to develop on top of the wine. Sherry is also commonly swapped between barrels of different ages, a process that is known as Solera. Laws in several jurisdictions require that whisky be aged in wooden barrels. The law in the United States requires that "straight whisky" (with the exception of corn whisky) must be stored