Kerala beef roast

Name: Kerala beef roast
Cuisine: Asian, Indian
Ingredients: Beef (cubed into bite sized pieces) – 1 kg; Meat Masala Powder – 1 tbsp (I used Eastern Meat Masala); Coriander Powder – 1 tbsp; Red chilly powder – 1 tsp; Onion (thinly sliced) – 1 large; Tomatoes (chopped) – 1 large; Curry Leaves – A sprig; Cilantro (Coriander leaves/Malliyella) – A few; Oil – 2 tbsp; Mustard Seeds – 1/2 tsp; Salt – As required; For Dry Roasting; Meat Masala Powder – 2 tbsp; Coriander Powder – 1 tbsp; Red chilly powder – 1 tsp; Turmeric Powder – 1/2 tsp; Garlic Paste – 1 tbsp; Black Pepper Powder – 1/2 tsp; Salt – to taste