Wash the strawberries and, except for 6 pieces for decoration, clean and cut smaller. Wash lemon hot and cut in half. Squeeze one half, cut the other half into slices. Finely puree the strawberry pieces and lemon juice. If necessary, pass through a sieve. Put approx. 4 tablespoons of puree aside
Mix the remaining strawberry puree and soured milk. Season to taste with sugar. Whip the cream until stiff, allow the vanillin sugar to trickle in. Fold the cream into the soured milk
Spread strawberry soured milk in 4 dessert bowls. Spread the rest of the puree on top and pull through a little with a spoon handle
Halve remaining strawberries and put them alternately with lemon wedges on 4 wooden skewers. Place on the strawberry soured milk and decorate with lemon balm
On hot summer days the strawberry soured milk is also very popular as ice cream. Fill it into ice-stick tins, close them and freeze for at least 6 hours. Eat within 10-14 days