Related Clues:

• Pepsi, but not 7-Up
• Fizzy beverage
• Coke rival
• Soft quaff
• Cola
• A caffeine source
• Dark drink
• Aerated beverage
• Michael Jackson once pitched it
• Long Island iced tea ingredient
• Fountain selection
• Fast-food beverage
• Ubiquitous beverage
• Picnic beverage, perhaps
• It may be requested at a fountain