Today’s whiskey tasting teaches us two different aspects of whiskey; Using a Sour Mash and what Toasting and different Char Levels do to the flavor. To do that, I tasted the Michter’s Sour Mash Whiskey and the Limited Edition Michter’s Toasted Barrel Sour Mash Whiskey. So what is a “Sour Mash”? The “Mash”, or sometimes…