For mutton keema matar, heat 150 ml oil in a deep pan over medium heat.
Add the whole spices (bay leaves, cardamom, cinnamon, star anise, cumin seeds). Let them sizzle for 30 seconds until aromatic.
Add sliced onions, ginger paste, garlic paste, and salt. Stir well, cover, and cook on low-medium heat for 8–10 minutes until onions turn soft and golden.
Add the mutton keema to the pan. Increase the heat to high. Cook for 8–10 minutes, stirring often, until the meat browns evenly. Break up any lumps while stirring.
Add turmeric, red chili, coriander, cumin, curry powder, and fenugreek leaves. Mix everything well and cook for 8–10 minutes on medium heat to let the spices fry and blend into the meat.
Pour in 1 pint (500 ml) of water (add more if you want more gravy). Stir well and bring to a boil over high heat.
Once the curry starts boiling, add 1 cup green peas. Boil on high for 8–10 minutes, then reduce to low and simmer for 5 minutes.
Add garam masala, stir, and taste for salt. Let the curry rest for a couple of minutes.