Prairie Fare: Potatoes pack a nutrition punch

“Wow, look at these!” the children said. “They’re purple!” one said. “Here’s a red one!” someone else added.Their enthusiasm nearly rivaled an archeological dig for dinosaur bones. They were digging potatoes and harvesting other vegetables at a garden plot for kids. They sorted and piled the colorful tubers.Potatoes are available in a variety of colors, shapes, and...