Defrost frozen raspberries at room temperature.
Wash the peaches thoroughly, blanch them with boiling water and let them stand for about 1 minute. Remove with a ladle, rinse with cold water and peel off the peach skin. Halve the peaches, remove stones.
Put the defrosted raspberries, vanilla sugar and lemon juice into a tall mixing bowl and puree. Sort fresh raspberries.
Arrange one peach half, 1 scoop of ice cream, raspberry sauce and fresh raspberries on four dessert plates. Decorate with mint.