I feel silly about this, and probably wouldn't have posted, if it weren't for Christine's post about strawberries.
It's always irked me that Friendship's cottage cheese goes bad so quickly. But the last time around, I was too lazy to completely rip off the metallic foil inner seal. And when I unearthed the half-eaten carton from the back of my fridge, it was still okay, weeks after the expiration date. Clearly, the foil made a real difference.
Is this common knowledge? Does everyone know this but me?