Related Clues:

• Pop, elsewhere
• Gin fizz ingredient
• Author Greene
• Cracker eponym
• Scotch and __ (bar order)
• Scotch diluter
• Carbonated water
• Popular mixer
• Fizzy fountain fare
• Religious leader who wrote 'Peace With God'
• Coke, e.g.
• Fast-food order
• Evangelist Billy
• Ice-cream concoction
• 16-Across, e.g.