Investors buy a cask of whisky when it is first produced and then hope that it rises in value as the spirit ages in the barrel.
It takes three years for spirit to become Scotch whisky in a cask, and investors are encouraged to keep barrels for up to 10 years or more to maximise returns.
Aw, I remember hearing about these years ago and thinking that investing in a cask of booze sounded so much cooler and more real than investing hallucinatory financial instruments or whatever.