Yeah, I said to begin with that aflatoxin probably wasn't a realistic concern, just old habits die hard after years of not buying PB in bulk out of the five-gallon pail that used to sit unrefrigerated in the store. It's not like I'm storing my crop in an unrefrigerated bin until next year's crop comes in - which is why it's so widespread in some parts of the world.
As far as glass vs plastic jars - actually, right now the supermarket is the only place I can get PB in glass, locally. We have a couple of natural food stores where I buy most of my staples, but neither one of them has PB in glass. And for some reason the supermarket is kind of hiding theirs - they started carrying a new brand called Sweet Ella's, but they put it one shelf over from the rest of their nut butters.
Also, just because it's at the natural food store doesn't mean it doesn't have additives. The one store has four or five brands of PB, but only one of them is additive free (and I'm not even counting salt, which I prefer unsalted PB but isn't a deal-breaker for me, the way palm oils, sugar, or some of the other "natural" additives are).
Speed comes from what you put behind you. - Judi Ketteler