Related Clues:

• Tavern servings
• Drinks with heads
• Bout segments
• Saloon suds
• Drafts, say
• Some ballpark beverages
• Boxing match units
• Microbrewery output
• They're on tap
• Birch and root, e.g.
• Intern's itinerary
• Regular routes
• They are bought in saloons
• A round at the tavern, often
• They may be tapped out