The Rise of the Sweet Potato

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November 23, 2010. Chapel Hill, NC.. Brenda Gooding listens to an explanation of the different types of sweet potatoes sold by Stanley Hughes at the UNC Hospital Farmer's Market..   The sweet potato seems to be having a comeback, with many farmers increasing their planting of the potato's numerous varieties, as well as many restaurants including it on their menu in various forms such as the ever popular sweet potato fry.