I have always thought of malming as basically the sort of heat and resin treatment that Marc StLouis advocates so eleoquently.
However I came across, on Youtube, a suggestion that some beneficial effect (though, I assume, less) can be got through the application of resin and solvent (Pine resin and turpentine in this case) to the belly without the high-temperature heat treatment, in that the resin still penetrates the near-surface cells of the belly wood and sets, somewhat hardening it.
Has anyone heard of this, or even tried it, might it work or really be not much more than a varnish?