Tonic water

Tonic water was an ingredient in gin and tonic, but it could be drunk separately. (AUDIO: The Panda Invasion)

At the Stagnant Pond, Norton Folgate gave Andy Davidson and Gideon Lyme gin without tonic, ice or a slice. (AUDIO: Parasite)

Barbara Wright drank tonic water at the Red Lion. (AUDIO: An Unearthly Woman)

Pete Tyler brought home tonic water. (TV: Father's Day)

Panda sacrificed himself to save the multiverse from being invaded by his alternative selves by jumping into a rift in the Time Vortex while holding a bottle of Tonic water. (AUDIO: The Panda Invasion)