Since I am amongst the few here who actually ate one I assure you that they were real, not processed, meat - beef sliced very thinly.
The ones that now masquerade as steak canadians (as shown in the pic) are a rip off version of the original.- like most of the junk food served up nowadays.
Incidentally, 'chicken in a basket' was popular at that time and that too was probably not from some fowl battery prison.
You young uns don't know what real food tasted like.
