Square 6 is a super-limited, high-rye offering by Evan Williams Bourbon Experience. Square 6 refers to the original plot of land where Evan Williams himself built his distillery in 1783—the first commercial distillery in Kentucky. It shared the same block on Louisville’s Whiskey Row where the Evan Williams Bourbon Experience opened in 2013. The Square 6 mashbill is made up of a scant 52 percent corn, a bullish 35 percent rye, and 13 percent malted barley, making it a heavy-hitting high rye bourbon. This is a new recipe for Heaven Hill, whose recipes include rye and wheated bourbons currently. Square 6 is launching at an impressively patient 5 years and is bottled at 95 proof.