It's a toss up between
1. Port (we quaffed copious amounts of this in the Sgt's Mess)
2. Glenmorangie single Highland Malt Scotch whisky (usully at funerals
3. G+T
I like a host of different tipples, but my favourite by a long shot, is 'Keummerling', a Bitter Schnapps. This drink, goes straight to the bottom of your stomach, and the you feel the warmth rising, all the way to your chest and above.