Rinse the prunes and pour boiling water over them. You can immediately cut it into strips if it is soft (as here), or to soften it, put it in hot water for 15-20 minutes and then use it to make a salad, or you can put it in a marinade for a richer taste. To prepare it, pour apple cider vinegar into a bowl, add lemon peel (in the form of plates), 1 tablespoon of brown sugar and mix.
Put the prunes in the marinade and leave for 20 minutes.