Heat oil and 1 tbsp ghee in a pressure cooker.
Add the cinnamon, cloves, and cardamom, and let them release their aroma.
Add chopped onions, green chillies, ginger, and garlic.
Sauté until the onions turn golden brown.
Add the mutton pieces and sprinkle the flour over them.
Brown the meat well, ensuring it is evenly coated with the flour and spice mixture.
Add salt, black pepper powder and just enough water to cover the meat.
Pressure cook for 3–4 whistles, or simmer on low heat after the 1st whistle until the mutton is tender and juicy.
Once the meat is cooked, add carrots, green peas, and potatoes.
Simmer until the vegetables are soft and the brown stew gravy thickens beautifully.
Squeeze in fresh lime juice.
Turn off the heat and allow the stew to rest for a few minutes before serving.