Slipknot has collaborated with the award winning Iowa-based Cedar Ridge Distillery to bring the world an original whiskey rich in Iowa roots, No. 9 Iowa Whiskey Reserve. Made with homegrown Iowa corn featuring a sweet and spicy flavor and finished with a bold flavor at a higher 99% proof, Slipknot No. 9 Iowa Whiskey Reserve furthers the quality of the No. 9 - maturing an extra year to allow more of the flavor to rock through.