Supermarkets Become Gluten-Free Guides

As the days counted down to Dorothy Lane Market’s inaugural Celebrate Gluten Free fair last October, C.A. Diltz was having doubts.

“I was wondering, what if nobody comes?” said the director of the three-store company’s gluten-free programs and organizer of the all-day event. “I was really worried.”

The anxiety was for naught, it turns out. The doors opened at Dorothy Lane’s flagship store in Dayton, Ohio, and customers came streaming in. They sampled offerings fro