LOS ANGELES—Joe Coulombe envisioned a new generation of young grocery shoppers emerging in the 1960s, one that wanted healthy, tasty, high-quality food they couldn’t find in most supermarkets and couldn’t afford to buy in the few high-end gourmet outlets.
So he found a new way to bring everything from a then-exotic snack food called granola to the California-produced wines that for flavor compared with anything from France. And he made shopping for them almost as much fun as sailing the high seas when he created Trader Joe’s,…