I have tasted in past years, plum jelly. I picked a load of plums this AM. They all have tiny black dots on skin that sometimes goes into the seed, but most don't penetrate the skin . Can I stew these plums with the dots for making jelly? Its like an insect has tried to puncture the skin & could not. Do you have a recipe for  using these to make jelly?
There is no seen bug or worm inside, just a thin discoloration that goes into a small area of seed.