Mama’s pantry was the size of a coat closet, but she kept it like a bomb shelter during the Cold War. Canned green beans lined up by expiration date. Sugar in a heavy glass jar with a rubber gasket. Coffee filters sitting in the exact same yellow Tupperware container since 1993. The flour tin sat on the very top shelf, wedged between a box of saltines and an old electric knife we never used. It was white enamel with little blue chips knocked off the rim.