A Fine Preserve of the Green Orange Plum

• Orange plums, when green, 6 lbs.:40 to 60 minutes.
• Sugar, 4½ lbs.:30 to 50 minutes

This fruit, which is very insipid when ripe, makes an excellent preserve if used when at its full growth, but while it is still quite hard and green. Take off the stalks, weigh the plums, then gash them well (with a silver knife, if convenient) as they are thrown into the preserving-pan, and keep them gently stirred without ceasing over a moderate fire, until they have yielded sufficient juice