Dear Alice,
My teenage daughter recently turned into a food-label tyrant, apparently convinced that her doddering old parents aren’t up to the job of maintaining a safe kitchen. She patrols our refrigerator daily, fiercely checking every label. If the date on a package has passed, she tosses it in the trash. We’ve had fights about this. I’ve explained that manufacturers set those dates conservatively, so food is still safe to eat for a while past expiry. She insists we’ll die if it’s even one day over. So, what’s the truth? What the heck do those dates really mean?
Sam T., Kumamoto

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