Whiskey Review: Jack Daniel’s Tennessee Sour Mash Whiskey. There can be only one king of whiskey and this is it, the #1 top selling American whiskey in the world: Jack Daniels. 12.5 million cases sold in 2018 (not including “ready to drink” varieties). Immortalized in song and so beloved by Frank Sanatra that he was buried with a bottle pxH2I.