I had previously taken the Secret Food tour in Paris, so I anticipated an equally enjoyable tour. Leah did provide a variety of yummy stops on the tour, and I even enjoyed a couple of dishes I would not have tried on my own. (Looking at you, muffaletta spread.)
My only critique is a long, drawn out tour which could easily have 30 minutes shaved off. I get that you want to give people their money's worth, but waiting for Leah to chat inside the grocery store, (all of us save 2 were waiting on her outside) or encouraging the group to buy at a stop, ("we'll wait for you!") put the only negative spin on the venture. I only had 2 days in Boston. If I was there for a week, maybe I would have been more patient. I don't expect to run to each stop; I do expect a nice, interesting pace.