First of all I pushed it through a sieve to extract all the soft pulp and leave behing the skin (which then got binned)
Then I looked at my fruit supply and decided that some of the apples really should be used soon. I cut off the bad bits, chopped the rest and stewed it in a little water until soft, then pushed that through a sieve too.
I mixed the plum and apple purees, added some jam sugar (more or less pound for pint, just a bit less that that) and also added some ground allspice and some lemon juice.
Then (and this is where I diverted from the usual method) I bunged it all in Thermione and set it to heat and boil on Varoma, reverse speed 3 until setting point was reached.
Otherwise I would have popped it into a suitable pan and done it the usual way!
It took a while to set and the texture is 'pulpy', not smooth, but it's lovely!