Natural peanut butter not only tastes great, it’s also good for you (well compared to normal peanut butter anyway). But the problem with all natural peanut butter is that the oil separates and pools on the top. Well with the Peanut Butter Mixer, that’s no longer a problem! Screw the mixer onto any standard 16 oz peanut butter jar and give the mixer a few good cranks and bam!!- your peanut butter is mixed up and good to go. It’s even easy to clean up with a removable lid liner.