Melt chocolate in a bain-marie till it softens. Add in small quantities blueberries and cover with chocolate till there are no more left (mix carefully to not damage the fruits). On a cookie plate covered with parchement paper, lay grapes of 5 to 6 blueberries at a time. Refrigerate till it hardens.
Enjoy right away.
Chef’s note
About the quantity of chocolate, go with the taste. Simply adjust with the quantity of blueberries with the chocolate.