Well written article here. Great information for and Whisk(e)y-phile!
Basically, wooden barrels.
Casks. What are casks? Traditionally, casks (barrels) are made of wood and are used to store and transport liquids from Medieval Times to the end of the Age of Sail. People definitely used casks to store water and/or wine in their homes for use and slowly, they realised that the casks impart a certain flavour to whatever is stored in them. In the case of wine/ales/beers, it amplified the flavour resulting in a better drink. Slowly, casking and cask ageing became a thing.
So, what is all this big fuss about cask ageing and the wood associated with it? To put simply, the whisky in its purest form is just a white distillate derived from malted barley. This white spirit has some flavour but lacks a lot more ‘punch’ and maturity to become a fully aged whisky. For it to fully become whisky, it has to be…
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