Green’s Dictionary of Slang

flourbags n.

(Aus.) a bush cook.

[Aus]E.S. Sorenson Cattle Muster in Life in the Aus. Backblocks 124: A merry troop follows in a bunch at their heels, while ‘Flourbags,’ the musterers’ cook, mounted on ‘the quietest thing they’ve got,’ brings up the rear and talks unlearnedly of horses and cattle.