When I take friends to a Korean restaurant, I always feel I spend more time explaining than actually eating. Whenever a dish is placed on the table, everyone points and asks, “What’s that?” as they ...

Certain foods seem to have sprung, ready-made, from a cosmic conveyor belt to the dining table. Ketchup? It comes from a factory in Pennsylvania. Goldfish crackers? From Pepperidge Farms, right? And ...