For the curd cream, mix the curd with sour cream, orange juice, powdered sugar and vanilla sugar until smooth. Crush or blend about a third of the blueberries with the back of a spoon. Fold into the curd mixture.
Mix the remaining berries with rum and granulated sugar and heat to lukewarm in a small saucepan. Fill berries into glasses. Spread the curd mixture over them and garnish with hips.