Malt whisky well as caramel coloring. There is no maximum limit on the alcohol level of the distillation or aging for Canadian whisky, so the distillate may be close to neutral before aging. Like the regulations for the aging of Irish and Scotch whisky, the aging requirement for Canadian whisky is three years, and the use of new barrels is not required. Malt whisky Malt whisky is whisky made from a fermented mash consisting primarily of malted barley. If the product is made exclusively at a single distillery (along with other restrictions), it is typically called a single malt whisky. Although malt
Whisky compound in sherry, and contributes fruitiness to the aroma. The diketone diacetyl (2,3-butanedione) has a buttery aroma and is present in almost all distilled beverages. Whiskies and cognacs typically contain more of this than vodkas, but significantly less than rums or brandies. Polysulfides and thiophenes enter whiskey through the distillation process and contribute to its roasted flavor. Whisky that has been aged in oak barrels absorbs substances from the wood. One of these is cis-3-methyl-4-octanolide, known as the "whisky lactone" or "quercus lactone", a compound with a strong coconut aroma. Commercially charred oaks are rich in phenolic compounds. One study