Related Clues:

• Ennui opposite
• Brand invented by the same man who created Pop Rocks
• Passion for life
• In-flight beverage?
• Twist at a bar
• Piquant taste
• Zippy flavor
• NASA citrus drink
• Dial competitor
• Last letter and mail sent to holy man in high spirits
• Zero-G drink
• Drink in space?
• Limoncello ingredient
• There's enough sharpness here to confuse confederate soldier in a large town
• Astronaut drink