Pork tenderloin with green pepper sauce

A pork doll like from a restaurant.
Juicy meat with a luxurious green pepper sauce.
A really simple recipe. Lunch ready in no time.
Ingredients for 2 large servings:
Pork doll 1 piece
oil, salt, pepper
Spoon of butter
2 tablespoons of pickled green pepper
0.04cl brandy or cognac
250ml thick beef broth or demi-glace
150 ml of cream
salt pepper