Preheat oven 200 degree. Marinate 1kg of beef in 1tsp of salt, 2tbsp of mustard paste; 1tsp of crushed black pepper, 1tbsp crushed red chilli, 1tbsp of rosemary and 4 tbsp of oil.
Now place 2 to 3 cloves of garlic, 2 carrots, 1 onion and beef on baking tray. Before placing beef on tray cover it with aluminum foil.
Bake for 45 min and remove the foil paper and again bake for 10 min.
For pepper sauce boil ½ cup of fresh cream ,1/2 cup of beef stock ,1tbsp black pepper .now add 1tsp of corn starch in water and mix in mixture . When mixture thickens remove it from flame.
Cut the roast beef in slices and pour pepper sauce over it beef slices.
Delicious roast beef is ready to serve