I came across this following sentence in H. G. Wells' Kipps and I don't understand what it means.
What he put into Kipps was chiefly bread and margarine, infusions of chicory and tea-dust, colonial meat by contract at threepence a pound, potatoes by the sack, and watered beer.
I get the other parts of the sentence, but what is "colonial meat"? Is it a particular type of meat? Or is it in reference to a method of farming/processing in the British Empire? Or, is it "colonial" as in an animal colony (This one may be too far off the mark as it doesn't seem to make much sense but just in case)？Also, "by contract" is alluding to the existence of some business arrangement between retailers and farms, right?
I'd really appreciate it if someone cares to clarify this bit for me. Thanks!