Scotch

Scotch was a kind of whisky. (PROSE: Scared Stiff)

The Fourth Doctor once drank twelve single malt scotches, chased with water, to protect himself from infection by an extradimensional creature.

Dave Lampton drank Scotch while making his rounds at MacDonald, O'Brien and Withers. (PROSE: After Midnight)

Jason Kane ordered a Scotch at the Witch and Whirlwind. (PROSE: Deadfall)

Yvonne Hartman was fond of Scotch. (AUDIO: One Rule)

Behind the scenes
The name of the alien species Taliskotian in the Torchwood audio story The Last Beacon was inspired by Talisker, a type of scotch, that Gareth David-Lloyd was drinking.