I don't refrigerate peanut butter either, but I would think if you weren't gonna finish the jar in a relatively timely manner, you should refrigerate it (same with the jam, actually. We eat it fairly quickly or we keep it in the fridge).
I'll ask my mom, the food scientist, to make sure, but I'm sure it would be okay to leave it out if you prefer to.
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timeasmymeasure
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Date: 2005-06-06 09:20 pm (UTC)I'll ask my mom, the food scientist, to make sure, but I'm sure it would be okay to leave it out if you prefer to.