Defrost the cherries.
Boil the water. Add berries and cook until boiling. Turn off the heat and let stand for 30-40 minutes on the lid.
Strain through a sieve, rub the berries. Heat again over low heat, add sugar.
Dissolve starch in boiled water.
Introduce a thin stream into the pan, stirring constantly. As soon as the jelly begins to thicken, remove from heat and let stand for 3-5 minutes.
Pour into glasses and serve.