The series is filmed in a real grocery store called "Jon's" in Reseda, California (formerly Vons), often with actual customers used as extras.
This is the Greens and Grains grocery store. It's been in my family for five generations. This is my father, Budd. He never thought I'd amount to anything, so I went to New York City to prove him wrong. He died before I could do so. And now I'm back...