Screech.
Is this the stuff currently served on the Akrotiri trooper?
I really hope not. The true original "Screech" is Maltese "Marsovin" wine, mixed 50-50 with lemonade to make it (almost) drinkable. A Rum & Coke was ninepence in the Gladiator Club at Luqa - sixpence for the coke and thruppence for the rum - On Thursdays we'd drink doubles for a bob a glass but by Tuesday we'd be down to Screech. It was truly horrible stuff but at one and thruppence a bottle it was all we could afford by Tuesday. (Pay Parade was always on Thursday).
For me, the best Compo was the mutton and peas; compo sausage would be my second choice. Powdered egg omelettes would be my TART (throw-away-rather-than-eat-it) choice.