Green’s Dictionary of Slang

(Aus.) Toohey’s Extra Dry beer.

2007		In the Mix 14 Sept. 🌐 A friend of mine described Emu Export as tasting like 50% backwash and 50% dregs. Imho the same could be said about the likes of Hahn super dry, Spewheys Spew, Spewheys extra dry (reach) or Spewheys extra dry (reach) platinum.
2010		Illegally Sighted 9 June 🌐 Just imagine for a moment sharing a pint with a a battery hen survivor. [...] it shares the same digestive acids as that pint of Tooheys Extra Dry-Retch, which, from its viewpoint (and certainly mine) would perhaps represent the highlight of its existence.