HARLEM STANDARD STRAIGHT BOURBON WHISKEY FOUR-GRAIN Harlem Standard Straight Bourbon Whiskey Four-Grain is our premium blend. It uses wheated bourbon and is crafted with propriety yeast and glacier water. The whiskey contains a mash bill of corn, wheat, rye, and barley malt. Aged 3+ years in new charred American white oak barrels, this 111-proof full-bodied whiskey will have you tasting hints of maple, brown sugar, and Allspice. Powerful yet harmoniously integrated for a long, smooth finish, Harlem Standard Straight Bourbon Whiskey Four-Grain is best served neat or in your preferred fashion.