You're looking for a peanut butter jar here, and the cache name should give you a decent idea of where to start your search!
As always, it's up to you whether or not to pursue finding and signing the log on a particular geocache -- please know that you choose to find each of these geocaches, and do so at your own risk. Please be considerate to the natural surroundings as you enjoy all that KNC has to offer, and try to leave the environment a little better than before you visit!