It's a slang shortening of nipperkin (which comes from the 1670s) meaning "quantity of beer or liquor of a half ... the same bag. This rule is where the term 3-1-1 came about (3.4 oz bottles ...

A subscription for exploring new beers: Beer of the Month Club A subscription for the freshest brews: The Original Craft Beer Club An in-store crossover: Half Time ... of cans and bottles, along ...