1) Place blackberries, butter, water, rosemary, sugar and vinegar in a small saucepan.

2) Cook over medium high heat stirring occasionally until slightly reduced. About 10 -15 minutes.

3) Remove from heat and stir in mustard and salt and pepper.

4) Leave marinade to cool.

5) Place drumsticks in a large zip lock bag,

6) Pour cooled marinade over top and seal. Toss to coat.

7) Place mixture in the fridge and marinate for 24 hours.

8) When ready to cook, preheat oven to 375

9) Arrange drumsticks on a cookie sheet coated in tin foil.

10) Cook for 25 minutes, turning once.

11) Serve hot with preferred side.