Boil berries in half a liter of water. Pour gelatin over water after the berries and allow them to swell. Wipe the berries through a sieve. Pour sugar into the resulting berries and mix well. We heat the gelatin so that it melts completely and pour into the berries .. You need to cool the berries and then beat with a mixer until a stable foam. Add the condensed milk slowly and beat again. We put it in molds and put in the refrigerator until it completely hardens.