Mazzer Super Jolly Electronic On Demand Coffee Grinder (110V). The Mazzer Super Jolly Electronic’s grind quality, ease of use, and durability make it the premier choice for many small to mid-sized cafes. It also allows for setting the dose by time to. 05 second with the electronic keypad. Data may vary depending on the set and roast point, blend, or single-origin coffee. Stepless micrometrical grinding adjustment. Maximum control to dial in your grind size. Improved heat ventilation for better grind size consistency and to protect the flavor of your beans. Holds your portafilter to dose into directly, also adjustable and removal for filling other containers.