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
Single malt whisky not always clear what the term "single cask" refers to. At least some producers release vattings of multiple barrels that have been matured together for one final period in a larger single cask as "single cask" whisky. While cask-strength, or undiluted, whisky (sometimes having an alcohol content upwards of 60%) has recently become popular, the vast majority of whisky is diluted to its "bottling strength" - between 40% and 46% ABV - and bottled for sale. Whisky can be "chill filtered": chilled to precipitate out fatty acid esters and then filtered to remove them. Most whiskies are bottled this way,