For any of you with access to a dehydrator and an abundance of greengage plums, dehydrated greengages are the most amazing snack. They're beautifully sweet and I think the flavour is only improved by dehydrating.
Pick them when they're fully ripe/soft, cut them in half, remove the stone and then cut them into slices no wider than 1cm. Put them in the dehydrator and turn the slices over after 4 hrs or so. They take quite a long time to dry (8+hrs) as they're full of liquid, but its worth it - just like chewy lollies!