Related Clues:

• Container for potassium, for instance
• The example of a barrel of potassium
• Container for the example of potassium
• Bulk beer buy
• Small cask formerly used for liquids
• Tun, for one
• It's tapped out
• Small cask for liquids, butter, fish
• Tap setting
• Beer bust delivery
• Vessel's key question
• Vessel's family tree, contrarily
• Measure affinity to tree
• Brewing measure
• Frat party delivery