Mix the yogurt and cream cheese until creamy. Add lemon juice, cinnamon and sugar and mix well. Then stir in the gelatin and stir vigorously for approx. 1 minute.
Pour the cream into molds and refrigerate for at least 1 hour. Bring the cherries to the boil in a saucepan and thicken with the cornstarch mixed in a little cherry juice.
Turn the cream out onto a plate and serve with the cooled cherries. Garnish with lemon balm if necessary.