Related Clues:

• Filmgoer's drink
• Teetotaler's selection, perhaps
• Bubbly buy
• Quinine-flavored drink
• Bicarbonate of ___
• It mixes well in bars
• Gin mixer
• Root-beer alternative
• Mixer option
• Pop for a meal?
• Vodka partner
• Fizzy soft drink
• Cherry __
• Pop in the mouth?
• 27-Across, e.g.