Wash the berries and drain well.
Place the blueberries and raspberries in a small bowl. Add 15g of powdered sugar to each and coarsely puree with a hand blender.
Whip the whipped cream until stiff.
Mix the sour cream with the remaining powdered sugar and the lemon juice. Fold in the stiffly whipped cream.
Pour 1 tablespoon of the sour cream mixture into each mold and freeze in the freezer for 5 minutes.
Then spread 2 tablespoons of the berry puree (fill 4 ramekins with the raspberry puree and 4 ramekins with the blueberry puree) and freeze for 5 minutes.
Continue until the popsicle molds are filled. Finish with a sour cream layer.
Place the lids on the molds and insert the wooden sticks 2/3 of the way in.
Freeze the popsicles in the freezer for at least 5 hours.
Preparation Tip:
To make the ice cream easy to remove from the mold, dip the ramekins briefly in lukewarm water and then pull gently on the wooden handle.