Peach jam made from peaches for winter

We take ripe and fragrant peaches, but not overripe, that is, not soft. When peaches are nectarines, you can preserve them without removing the skin.
and if the fruit has a very hairy skin, remove it by dropping the peaches into boiling water for half a minute and then transferring them to cold water. We will remove the skin if the peaches are ripe, and if they are unripe, we will cut them with a knife.

Each of the fruits will be cut along the circumference along the groove to the very bone. Turn the halves of the fruit in different directions, and the stone will remain in the other half of the peach. And cook the fruits for 15 minutes with a small boil in syrup.
Let's put the peaches in a colander. Pour the syrup into a saucepan. Note its level, and boil the syrup twice. Then we will transfer the peaches into it. Bringing to a boil, boil them for 1-2 minutes.
If the peach jam is very sweet, you can add the juice of a quarter of a lemon to it. If you are making a preparation for the winter, then we will spread the jam on the prepared jars and, having rolled it up, put it in the heat until it cools down. By the way, these peaches will make 1 liter of jam.