
If you have a quince tree in North London you get used to people helping themselves to the fruit. They think they’re pears and they will have a disappointment when they find they don’t ripen or soften but stay hard, grainy and inedibly sour. The point of quinces is their flavour; when they’re cooking they perfume the air, they are the classic fruit in Moroccan lamb tagines and adding even a little transforms any cooked apple dish.
They arrive in greengrocers and fruiterers about now, but they are hardly affordable — as much as £2 for a big Turkish quince. For some years we have been planting trees whenever possible — from Amersham to Dalston — and the payoff is being able to use them in ways that would normally be uneconomic, from stewed in honey syrup for breakfast with muesli and sheeps yogurt to making quince jelly and jam. We would also like to make the delicious quince cheese or paste called Membrillo, but it is literally a safety hazard, exploding as it boils throwing blobs of scalding material around the kitchen like a fragmentation weapon.
There are recipes for quince jam but they mostly don’t work. The problem is that if you make it like a normal jam, combining cut up pieces of quince with water, sugar and lemon juice, the quince flesh will dissolve and produce a less good version of membrillo (you get membrillo by carrying on cooking until all the water has been driven off). Or you can make a syrup and add quince pieces to it. But you then lose control of the process; the raw quince pieces will shed liquid into the syrup and it won’t set.
Our solution is to make a syrup using the skin and cores of the quinces. Meanwhile we cook the pieces of quince till they are just soft, then put them in the boiling syrup. The quince pieces will keep their shape, being preserved in the syrup, but being already softened they won’t go rock hard. Tiptree sell a quince jam quite like ours, so they must be using a similar technique, but it doesn’t seem to appear in any written recipes.






