It’s been nearly 10 years since Sam Calagione at Dogfish Head Craft Brewery introduced the world to Randall the Enamel Animal, otherwise known as an organoleptic hop transducer module. Basically, it infuses beer with fresh hop flavor as the beer passes through a filter full of hop cones between a beer keg and glass.
More recently, Dogfish Head rolled out a Mini Enamel Animal (Randall Jr.) that works at home. Just twist off the top; add hops, spices, fruit or whatnot, fill with ale and drink. It holds 16 ounces and is made of double-walled, BPA-free plastic.