MissAdventure
What was coke, then?
Was that nutty slack?
my memory is that coke was an industrially processed fuel, kind of rendered coal, with the gas taken out, or was it oil, something that flared and flamed bright in the grate.
coke was produced for enclosed boilers or back boilers as the ignition point was higher.
sometimes a gas poker was used to get it going.
that was quite posh, and i think it occurred to people that if you had a gas supply near the grate, you might as well fit a gas fire, if you could afford it and were not in rented accomm.
a gas fire was so much easier; not sure of the running costs though, by comparison with an open fire.
nutty slack was low-grade, sweepings-up, bits and coal dust.
useful for backing up a fire, as described above.
i never heard of anyone starting a fire with it, wouldn't seem adequate.
but my knowledge is partial.
nice to remember though.