21st Anniversary Brew. We will be releasing the first batch ever of "Brass Knuckle Imperial I.P.A.", "White Knuckles" big brother. Using the same raw materials as our White Knuckle Double I.P.A., we have created an even bigger hop monster. Similar flavors, but MORE! We used over 8 lbs. of hops per barrel in the "Brass Knuckle" & dry hopped it 3 times! This brew weighs in at about 10% alcohol by volume. Beware of the PUNCH of the "Brass Knuckle".