Mix starch and some milk in a pot. Mix well with the rest of the milk, eggs and sugar. Add the cinnamon. Heat everything over medium heat while stirring constantly. Remove from the heat just before boiling, continue stirring for 2-3 minutes
Spread the cream through a sieve and let it cool down while stirring occasionally
Scald peaches with boiling water and skin them. Remove seeds (drain peaches from the tin). Cut peaches into slices. Pluck off lemon balm leaves and cut into strips. Stir into the cream
Whip the cream until stiff and fold into the cream, except for something to decorate. Arrange the peaches in 4 dessert glasses. Pour in the cream. Decorate with remaining cream, brittle and lemon balm