Where the Produce Includes Pepperoni: The Pizza Farm
In parts of the Upper Midwest, the phrase “pizza farm” is as evocative of summer food as “juneberry pie,” “butter cow” and “rutabaga festival.” (The 88th annual celebration begins Saturday in Cumberland, Wis.) Trace the route of the Mississippi River down from Minneapolis and along the Wisconsin-Iowa border. In the last two decades, dozens of…