Mutton (lamb) curry

Whoever likes lamb/mutton and spicy food, would just love this recipe. No other explanations needed.
Preparation time: 50 min.
Working time: 30 min.
Cooking in a pressure cooker takes the above time but cooking in a pan takes longer time than this.
Ingredients:
Mutton: 2 lbs
Onion: 1 medium ( finely chopped)
Tomatoes: 2 medium (finely chopped)
Potato: 1 big ( chop into 1"x1" pieces)
Coriander leaves: 6 tbsp
Green chilies: 5 (finely chopped)
Yogurt: 3 tbsp
Lime juice: 4 tbsp
Water: 1 cup
Oil: 4 tbsp
Turmeric: 1/4 tsp
Red chili powder: 1 tbsp
Coriander powder: 1 tbsp
Garam Masala: 1/2 tsp
(available in Indian grocery stores)
Black pepper: 1tsp (freshly ground)
Cinnamon: 3"
Cardamom: 3
Cloves: 5
Garlic: 3 cloves
Ginger: 1/2"
Cumin seeds: 1/2 tsp
Mustard: 1/2 tsp
Bay leaf:1
Method:
Heat oil in a pressure cooker.
Add mustard and cumin seeds.
When the mustard splatters in oil, add onions and green chilies.
Cook until the onions turn golden brown by mixing in between.
Add turmeric, ginger and garlic.
Cook for about 1 min.
Add bay leaf, cinnamon, cardamom and cloves.
Cook for 1 min.
Add tomatoes.
Slightly mash them with a spoon.
Add chili powder, coriander powder, pepper and garam masala.
Mix well.
Add potatoes and mutton.
Stir until mutton turns slightly pale in colour.
Add yogurt, lime juice and salt.
Add water and coriander leaves.
Mix well.
Keep the lid and cook for about 5-6 whistles.
When it is done and pressure is gone, remove the lid and check the taste for salt. If mutton is not cooked well, add more water if needed and cook for 3 more whistles.
Serve with hot rice/ tortillas.