Slipknot Red Cask No. 9 Whiskey – Slipknot Red Cask No. 9 Whiskey takes Cedar Ridges aged bourbon and rye whiskeys and finishes them for an additional year in estate-owned, red wine casks before expertly blending them for this most recent release. The red wine finish gives a new dimension of flavor, body, and finish to the final product; all while packing the punch Slipknot No. 9 fans have come to love.