Since 1947, Cetercians have taken over from the Carthusian monks living in an adjoining cloistered wing, but continue to manufacture Certosa's well-known Chartreuse liqueur and herbal soaps in an adjoining shop.
The monks still produce the famous Charteuse liqueur and soap.
They don't realize the formula is done in the rationalized M K F system, and so they plug in inches and feet and pounds and come up with the funniest answers you could think of.