A stirring assembly, including a vessel and a stirring apparatus. The vessel includes a baffle plate connected to an interior wall of the vessel, and a space between the baffle and the wall. The stirring apparatus includes a lid assembly including a variable speed motor, the lid assembly removeably securable to the vessel, and a shaft removeably connected to the motor and extending into an interior space of the vessel. The stirring apparatus includes a single scrapper attached to a distal end of the shaft, extending radially outward from the shaft, and in contact with a bottom interior surface of the vessel and a multi-bladed propeller secured to the shaft. A position of the propeller along a length of the shift is adjustable.