Answer:

cola

Answer	Crossword Clue
COLA	Soft drink
COLA	Carbonated canful
COLA	Diet-Rite, for one

COLA	Royal Crown, e.g.
COLA	Soda-fountain offering
COLA	Pay incr., of sorts
COLA	Popular soda
COLA	Pop favorite
COLA	Soda pop
COLA	Taste test offering
COLA	Sweet mixer

COLA	Tab, e.g.
COLA	Concession-stand purchase
COLA	Mix for rum
COLA	Popular pop
COLA	Caffeine-loaded nut
COLA	Pop choice
COLA	Fizzy mixer
COLA	Coke or Pepsi

COLA	Pepsi or Coke
COLA	See 81D
COLA	Pop
COLA	What a vending-machine drink often is
COLA	Cuba libre ingredient
COLA	Fountain drink
COLA	High-calorie drink
COLA	RC, e.g.

COLA	Roy Rogers ingredient
COLA	Icee flavor
COLA	Fountain order
COLA	Fizzy drink
COLA	Pepsi or Royal Crown
COLA	Bubbly drink
COLA	Caffeine source
COLA	Pepsi or RC

COLA	Soft drink choice
COLA	Bubbly beverage
COLA	Soft drink option
COLA	Dark soft drink
COLA	Drink from nuts