Used the steam-juicer-produced juice to make some jelly, and the leftover fruit for some dulce de membrillo.
The juice boiled down far more and faster than usual. I only got a couple of jars of jelly out of the litre, and it was so jelled that it was jelling on the ladle and refusing to pour into the jars after the first one. Either cooking it for that long made it concentrate too much or you need to boil this juice for a much shorter time once it comes to foaming point. Or maybe boiling it for that long made the juice reduce. Interesting; I'll try again with apples next week.
The dulce de membrillo turned out nice; had some with bread-and-cheese and lentil soup tonight, and one of the jars went to a neighbour as a small Christmas present. I haven't tried the jelly yet, but reckon it'll probably be like those tiny cubes of expensive jelly you get in fancy restaurants with the cheese.
Altogether, reasonably successful for a first go.