Pickled Blueberries with Rosemary

1 pint blueberries 1 cup white wine vinegar 1 3/4 tbsp salt 1 tsp black peppercorns 4 sprigs rosemary (from Food52 ) bring vinegar, salt, peppercorns and rosemary to a boil in a small saucepan rinse blueberries and put them in a glass jar remove saucepan…