Now, heat 4 tablespoons of mustard oil in a heavy-bottomed kadhai or pan.
Once the oil is hot, add 2 bay leaves and 2 dry red chilies to temper it. Then, add the chopped onion and fry for 2 minutes.
When the onion turns a deep pink color, add the chopped tomatoes and 1.5 tablespoons of ginger paste. Mix and cook for 1 minute.
Next, add 1 teaspoon each of turmeric powder, red chili powder, and salt. Cook this mixture gently for about 5 minutes, until oil begins to separate from the edges.
Then, add the marinated mutton and mix everything well. Cook the mutton over high heat for 5-7 minutes, during which you'll notice it releasing its own moisture.
Reduce the heat, cover the pan, and continue cooking on a low flame for 15 minutes, checking occasionally.
Now, boil about 3 cups of water and add it to the mutton. Cook for one hour. To speed things up, you can transfer the mutton to a pressure cooker and cook on low heat until it whistles 4 times; otherwise, continue cooking in the pan/ kadhai over a low flame for the full hour.
For extra flavor, you can also add 2 whole garlic cloves to cook alongside the mutton.
By now, after approximately 1.5 hours of cooking (30 minutes initially, followed by an additional hour), your mutton should be wonderfully tender.
If you prefer more gravy, simply add some hot and boiling water. Now, finely chop a generous amount of fresh coriander leaves.
Stir these chopped coriander leaves into your mutton gravy or lamb curry.
Next, add ½ teaspoon of sahi garam masala and 1 tablespoon of ghee, mixing everything together thoroughly. Turn off the heat.