Original sentence: A concurrent resolution passed by the United States Congress in 1964 restricted bourbon to U.Ancient Age.Ancient Age - Kentucky.As of 2003, all straight bourbons use a sour mash process.As of 2003, bourbon is made in Kentucky, Indiana, [[Georgia (U.Crow was the sour mash process, by which each new fermentation is conditioned with some amount of spent beer (previously fermented mash that has been separated from its alcohol), in much the same way that sourdough bread is made from starter.Curiously, when thinking about bourbon, many people first think of the brand Jack Daniel's, which is of the similar Tennessee style, and not technically a bourbon.Early Times - Kentucky.Elmer T.However, most bourbon lovers consider the whiskey made in Kentucky to be the best in quality.Jim Beam.Jim Beam - Kentucky.Labrot & Graham.Maker's Mark - Kentucky.Old Crow.Sam Cougar.Seagram - Indiana.See also:  Corn whiskey, Moonshine.The acid introduced by using the sour mash controls the growth of bacteria that could taint the whiskey.Wild Turkey - Kentucky.Woodford Reserve.|Georgia]], and Virginia
Edited sentence: A concurrent resolution passed by the United States Congress in 1964 restricted Bourbon to US production, but no further.All straight whiskeys use a "sour mash" process.Crow was the "sour mash" process, by which each new fermentation is conditioned with some amount of spent beer (previously fermented mash that has been separated from its alcohol), in much the same way that sourdough bread is made from starter.See also:  Corn whiskey, Moonshine, Tennessee whiskey.This is a matter of tradition rather than law, although few, if any, bourbon lovers would take a non-Kentucky "bourbon" seriously.While today whiskey is made primarily in Kentucky, Tennessee, and Virginia, bourbon is an exclusive product of Kentucky