Marination

1. In a bowl, place 1 Kg of curry-cut mutton with bone. Include 1.5 Tsp. of salt, 1.5 Tbsp. of garlic paste, and 1 Tbsp. of ginger paste.
2. Mix well and let the mutton sit at room temperature for a minimum of 3 hours. If feasible, allow the mutton to marinate for a duration of 8 hours.

Mathania Chili Paste

1. To make a delicious Laal Maas dish with about 1kg of meat, you'll need to have 20 Mathania Chilies on hand.
2. Start by slicing the 20 Mathania Chilies and removing their seeds.
3. After that, soak the chili skins in a bowl of hot water for half an hour, and discard the seeds.
4. Once they're soaked, take 2 tablespoons of water from the soaking bowl, along with the chilies, and blend them into a thick paste.
5. Lastly, peel and roughly chop 300g of onions.

Spice Paste

1. In a bowl, place 250g of Plain curd.
2. Combine 1 Tsp. Cumin Powder, 1 Tsp. Coriander Powder, 1 Tsp. Degi Mirch, and 1 Tsp. Turmeric Powder. Thoroughly mix the ingredients together.
3. Next, add 1 Tsp. Salt and 3 Tbsp. Mustard Oil to the mixture, then continue mixing.
4. Allow the mixture to sit at room temperature. 

Prep Work

1. Finally, peel and roughly chop 300g of onions.

Cooking

1. Start by heating 75ml of ghee in the pot.
2. Once melted, add 2 cinnamon sticks, 5 cloves, 5 green cardamom pods, and 4 bay leaves to temper the ghee.
3. Next, add the chopped onions and fry them for 3 minutes over medium heat, being careful not to brown them.
4. After that, add the marinated mutton and fry it on low heat for 5 minutes.
5. You'll notice the mutton lightly browning.
6. Now, add 1 tablespoon of garlic paste and 1/2 tablespoon of ginger paste, and continue to shallow fry for another 5 minutes.
7. At this point, the mutton will start releasing moisture.
8. Add the Mathania chili paste and mix well. Cook for 10 minutes over low heat.
9. I recommend rinsing the bowl with 3 tablespoons of water and adding it to the pot.
10. You'll see that the mutton not only releases more moisture but also takes on a vibrant red color.
11. Finally, add the spice paste and mix thoroughly.  In the bowl, combine 3 tablespoons of water and add it to the mixture.
12. Stir continuously as you slow-cook the ingredients over low heat for 10 minutes. Throughout this process, avoid covering the vessel with a lid and continue stirring.
13. The mutton should have been cooked for a total of 30 minutes over low heat, following different steps. Now, reduce the flame and cover the mutton with a lid. The cooking time for the laal maas will vary between 45 minutes to an hour, depending on the quality of the mutton.
14. Every 15 minutes, you can open the lid and stir it. After 45 minutes, check if the mutton is fully cooked. If not, cook it for an additional 10 minutes. In my case, it took 1 hour instead of 45 minutes after covering with the lid. This implies that you should cook the mutton for at least 1.5 hours over low heat to achieve the desired flavors of the iconic Laal Maas.
15. Once the cooking process is complete, turn off the flame. Allow the Laal Maas to rest for 2-3 hours before serving. This resting period will ensure that the flavors are fully infused.