For the blue cheese butter:
75g unsalted butter, cut into cubes
75g good strong blue cheese like a Stilton or Roquefort
Zest of 1 lemon
2 tbsps chopped parsley
salt and freshly ground black pepper
For the steaks:
2 good-quality rump steaks, weighing about 200-250g each (aged for at least 28 days if possible)
2 tbsps olive oil
To serve:
A bunch of watercress
Juice of 1 lemon
2 tbsps olive oil
Baked potatoes or wedges