Grumpy’s Downtown Firkin Friday: Knot Stock By ryan on February 11, 2010in bars/restaurants, beer events, cask beer Friday 2/12, Grumpy’s Downtown. They’ll have a cask conditioned firkin of Furthermore Knot Stock. Free apps. NOON. Post navigation Previous||Next Related Posts Lake Superior Special Ale firkin at Hell’s Kitchen, Duluth By ryan on January 21, 2008 HopSlam Cask at Grumpy’s NE By ryan on January 29, 2009