In berry juice, pour the gelatin, mix and dissolve over low heat.
Mix sour cream, syrup, berries and gelatin.
Beat the whites until they reach firm peaks and mix gently with the mixture.
Berries can be take and fresh-frozen. They do not need to be thawed and added to the mixture after all other ingredients are mixed until smooth. Because the mass solidifies immediately upon contact with the gelatin mass.
Spread the mass on the glasses and put in the refrigerator for at least 2 hours until solidification. Decorate with berries, mint and serve.