For the puree, drain the apricots. Cut 2 halves into slices. Purée the rest with liqueur, orange juice and zest.
For the cream, whip the cream and crème fraîche with the whisks of the mixer until stiff. Fold yoghurt first, then half the apricot puree into the cream.
Coarsely crumble the shortbread with your fingers. Alternately layer 2 tablespoons of yoghurt cream, approx. 2 teaspoons of biscuits and 1 tablespoon of apricot puree in each of four glasses (each containing approx. 200 ml). Decorate with cookie crumbs and apricot wedges.
The apricots are best pureed in a tall, narrow cup.