I found an old (well not THAT old) jar of natty PB in the cupboard. Of course, it had a good layer of oil on top. I can stir it for quite a while but the oil never does seem to mix all that well and it seems like I'm eatting too much of the oil. How DO you natty PB people deal with it? I like the no-sugar-no-salt-added taste, but the oil slick is kind of bothering me. Is there a trick I'm missing?