Grandpa Witmer's peanut butter mixer stirs in the separated oils from natural peanut butter without splashing. This tool is a must have for natural peanut butter enthusiasts and makes it possible to enjoy natural peanut butter without an oily mess! Specially designed for a vigorous stirring with a smooth and even rotation. The knob spins freely to turn the crank while the mixing rod churns inside the full length of the jar, blending its contents thoroughly. Once peanut butter is mixed, a flexible gasket inside the lid effectively cleans the mixing rod when it's drawn out of the jar while a liner inside collects excess peanut butter. An easy-release tab allows the liner to be removed for an effortless and thorough cleaning.