A civil war has erupted in the Volunteer State over a seemingly settled matter: What, exactly, is Tennessee whiskey? Last year, the legislature passed a law defining the production of its signature hooch based largely on the method local whiskey behemoth Jack Daniel's has used since the 1870s. That raised the ire of global liquor giant Diageo, whose George Dickel is the state's distant-second-best-selling brand.
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