Related Clues:

• It's tapped in a pub
• Brewery cask
• Vessel for beer
• Tapping site
• Barrel in a bar
• ID-requiring purchase
• Cooper creation
• Frat vessel
• ___ stand (college party trick)
• Small cask or barrel
• A barrel for beer
• A small barrel
• A barrel as for beer
• Barrel as for beer
• Is that the example of potassium?