In my mountains of moving boxes are my recipe books that I specifically want for plum jam recipes. Our landlord brought around a box of plums (a few kilos worth), and I am thinking we won't eat them all, so I should make jam!

Only problem is, I've never made jam before. Been reading googled recipes, some say to peel and chop the fruit, discard stones, keep stones and fish them out with a slotted spoon, and seemingly put the fruit in uncut? Really? What am i supposed to do?

They are beautiful fruit, so I don't want to nuff it up. I am hoping to give some jam back to the landlord, and just hate failing cooking in general.

Lastly, the skins are a purple/green, and the flesh is dark red, like red wine. What kind ofplums are they?

Thank you!