Michter’s US-1 Toasted Barrel Finish Sour Mash is a limited-release expression that builds on the classic Michter’s Sour Mash Whiskey by giving it a secondary maturation in custom-toasted barrels. These specially crafted barrels—air-dried and toasted rather than charred—add a deep layer of warmth, complexity, and refined sweetness to an already beloved whiskey. The result is a well-balanced Kentucky whiskey with rich texture, elegant spice, and a signature smooth finish. Released in small batches and bottled at 86 proof, it’s a must-have for collectors and fans of nuanced American whiskey.