David Gilmour, The British in India: A Social History of the Raj (New York: Farrar, Straus and Giroux, 2018), p. 287:
‘Stalky’ Dunsterville was delighted to come across a retired Sikh officer who told him that brandy and soda (brandy pawnee, the officers’ favourite drink) would be improved by doubling the quantity of brandy and replacing the soda with champagne.