Related Clues:

• Lab reagent
• Fountain offering
• Picnic drink
• Nut-bearing tree
• Shake alternative
• Soft drink flavor
• Burger accompaniment
• Bubbly quaff
• Bar choice
• Counter offer
• Soft-drink flavor
• Gin partner
• One who mixes with Jim, Jack and Johnny?
• RC, e.g.
• Fountain offering, perhaps