Wyoming Whiskey The Grand Barrel No. 2641, Blue Label, is a single-barrel straight bourbon bottled at 120.4 proof, part of a series that pays tribute to the Grand Teton and supports the Grand Teton National Park Foundation. The mash runs 68% corn, 20% rye, and 12% malted barley enough rye to give it real spice without losing the corn sweetness underneath. High-elevation Wyoming aging brings wide temperature swings that push barrel interaction differently than a Kentucky rickhouse, giving it a distinct character within the bourbon category. Single barrel means this exact bottle won’t repeat. Start it neat.