- Combine blueberries with sugar, turning into puree.
- Bring almost to a boil, rub through a sieve.
- Add cream to the puree, bring it to the boil and pour it over finely chopped chocolate (or chocolate chips).
- Beat with a blender, tightly cover with foil, and put in the fridge for at least 4 hours.
You can fill the macarons when the ganache has the consistency of a very thick sour cream. Fill the macarons and place them in the fridge horizontally for an hour. You can put the macarons upright when the ganache has set.