The Rise of the Sweet Potato

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November 23, 2010. Chapel Hill, NC.. Customers buy sweet potatoes and other produce from Stanley Hughes, a farmer whose family has been in the business for generations, 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.