Aeneas Coffey invented the Coffey still, a continuous column still that transformed whisky production.
Coffey was an Irish distiller and inventor who patented an improved column still in 1830. Unlike a traditional pot still, which operates in batches, a column still can receive wash continuously and produce spirit continuously. This increased efficiency and made large-scale production more practical.
The Coffey still was especially important for grain whisky, which became a major component of blended Scotch whisky. Its design could produce a lighter, higher-strength spirit than many pot-still processes, allowing producers to combine grain whisky with more intensely flavored malt whisky.
The name is sometimes confused with coffee because of its spelling, but it comes from Coffey’s surname. The invention did not replace pot stills: many distilleries still use them to make distinctive malt and other pot-distilled spirits.