Start by cutting the nectarines into slices withoug peeling them (one medium-sized nectarine into 6 slices).

Set them aside in the sugar and the lemon juice so that they let out their juices (they don't need any water at all).

On the next day, place them into a pot and boil until the syrup thickens.

When they are ready store in sterilized jars and turn them over until they cool.

Ready to enjoy!