It has 16 sides and has an aluminum dispenser that if you pull on it, it dispenses a set amount of powder. Spring-loaded dispenser. We think it was for malt powder, but not 100% sure. Holds about 1/2 gallon. All assitance is greatly appreciated. Inside of dispenser spoutInside of dispenser spoutdispenser spout - screws onto glassbottom is marked 831 and 7