There’s no reason to imagine. Those empty shelf pictures could have been taken at my local Texas HEB. I always have a continuing two column list of BASIC foodstuffs printed out on a regular sheet of paper with the 25 most important items starred. I’ll be lucky to mark off a third of the list. Cauliflower, an apple corer and a fly swat have been on the list for a year. The last trip to the store was the first time they’d ever carried puff pastry sheets so I grabbed four. I’m not holding out hope they’ll be in stock next time. Milk and bread may not be stocked.
Milk and bread may not be stocked.
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Powdered milk and flour have very long shelf lives.
On the other hand, insulin has about a 3 week shelf life and must be refrigerated. My wife uses it.