Cherry plum jam

So, we are preparing for the winter :) Pickles, jams… Today we are preparing cherry plum jam. It turns out to be very tasty, bright. But I want to note right away that for the sake of all this, you will have to work hard... Be patient and have time! But I advise you to try) Moreover, we will only make 3 liters of jam. so you won't get too tired!!
The cooking recipe looks simple. My cherry plum. We put a cup of water on the stove, bring the water to a boil. We throw the cherry plum into boiling water and mark the moment when the skin begins to burst. Immediately remove from the fire and put the fire under cold water. That's when the difficulties begin… It is necessary to remove the skin from each berry and remove the bone… There are a lot of tips on the Internet: grind through a sieve, through a colander. I didn't succeed, I worked with pens…
Done. The simplest thing remains. We fill the berries with sugar, mix well and put them on the stove. As it boils, cook for 5 minutes, then cool. Then bring to a boil again, cook for 5 minutes, cool. And we repeat the same procedure again.
We prepare jars, pour jam.
And in winter we feast on buns with cherry plum jam, washing everything down with tea :)