Pass The Plonk
A media release from my old stomping grounds notes that “Many of the slang words that make Australian English unique — including Aussie — come from war, according to Dr Bruce Moore, the Director of the Australian National Dictionary Centre, based at The Australian National University.”

Among the words is plonk, which is described as a common Australian slang term for wine that is thought to have gained currency during the First World War and is probably a corruption of the French ‘blanc’ as in vin blanc, or white wine.

Australia - the land of colorful slang and wonderful wines.