Green’s Dictionary of Slang

a cauliflower.

1911		W.L. George A Bed of Roses in DSUE (1984).
1915		T. Burke Nights in Town 396: Dishes which were billed on the menu as; Pudding, boiled and cauli.
1943		M. Harrison Reported Safe Arrival 43: He asks the housewife a reasonably fair price for his oranges and ‘collies’.
1964		P. Terson Night to Make the Angels Weep (1967) II xiv: Yeah, caulis out, parsnips in.
1977		J. Rosenthal Spend, Spend, Spend Scene 65: I don’t think they’ve ever heard of vegetables ... sprouts or a nice cauli.
1984		Flame : a Life on the Game 122: I’d do miraculous things with a pound of potatoes and a couple of carrots and a cauli.
2003		McGill Reed Dict. of N.Z. Sl.