600 g  Celeriac

1  Broccoli Heads , florets separated

80 g  Blackberries , thawed if frozen (if you can’t get fresh)

250 ml  Beef Stock

2  Venison Steaks

1 tbsp  Vegetable Oil

30 g  Salted Butter

40 ml  Whole Milk

50 g  Chives , finely chopped

1 tbsp  Balsamic Vinegar