Cantuccini crumble. Spread the crumbs, except for 1 tablespoon, in 10 glasses (each containing approx. 250 ml). Sprinkle with 100 ml limoncello. Mix quark, mascarpone, sugar, 100 ml liqueur, lemon zest and juice with a whisk of the hand mixer.
Stir in sauce powder. Whip 250 g cream until stiff and fold in. Pour cream into a large piping bag and squirt into the glasses. Chill for about 1 hour.
Whip 250 g cream until stiff, fill into a piping bag with a large star-shaped spout. Spray tuffs onto the cream. Wash blueberries, drain well. Sprinkle with blueberries and remaining crumbs. Decorate with lemon wedges and zests.