Mix the raspberries with some of the sugar and place in a saucepan. Cook until the raspberries are a little overcooked. Then brush through a hair sieve and add the raspberry brandy.
Now add the rest of the sugar as needed - but don`t make it too sweet.
Since the dessert is usually relatively sweet, the fruit mirror is an interesting alternative to taste. Ideal as a companion to a mousse or to decorate yoghurt desserts.