Ingredients:
Sirloin steak 500 gms
Olive oil 50ml
Butter 50 gms
Onions 100 gms
Flour 20 gms
Worcestershire sauce 15 ml
Mustard paste 2 gms
Salt to taste
Pepper powder 10 gms
Sour cream 50 ml
Beef broth 200 ml
Garlic cloves 20gms
Mushroom 200gms

Method of preparation: 

1. Slice beef and and fry on a pan till it is done with some olive oil.
2. Add butter chopped garlic and onions and sliced mushrooms and sauté until soft and lightly brown.
3. Pour 1 cup of beef broth scrapping bits from the bottom of the pan and then add sour cream and simmer for 10 mins.
4. Stir in 1 tbsp Worcestershire sauce, mustard.
5. Season well and serve hot garnish with fresh cream on a bed of fettuccine pasta.