@the_etrain@beige.party I always thought it was a shape-based term for a standard small to medium barrel size that went back to the Middle Ages rather than a comparison to an actual hog’s skull. Wikipedia cites etymology derived from corruption of a Germanic word that should have been translated as ‘oxhead’ — which hardly helps other than to explain the 225-250 litre size. https://en.wikipedia.org/wiki/Hogshead