Green’s Dictionary of Slang

fritz n.1

also pork fritz
[Ger. name Fritz, linked to a German sausage]

(Aus.) a large, but not especially spicy, sausage.

[Aus]Truth (Sydney) 8 Nov. 7/7: Pork fritz manufacturers have become alarmed, and some are [...] advertising that their commodities are really made from pork and veal [AND].
[UK]R. McGregor-Hastie Compleat Migrant 106: Fritz: sausage.
[Aus]Kings Cross Whisper (Sydney) vi. 3/2: Four slices of slightly mouldy pork-fritz.
[Aus]G.W. Turner Eng. Lang. in Aus. & N.Z. (rev. edn) 123: Sausages in South Australia [...] retain German names [...] and the same influence is seen in the now standard use of fritz for a German sausage.
[Aus]P. Barton Bastards I Have Known 114: A half-eaten hunk of fritz.
[US] (ref. to 1906, 1912) it (Canberra Bushwalking Club newsletter) [Internet] Members of the Warragamba Walking Club (1906) carried small cabin biscuits, dates or figs, a piece of fritz [...] For their first long distance journey (1912) Myles Dunphy and Bert Gallop carried pork fritz, German sausage, bacon [...].