Ingredients:

2 cups long grained rice 
1 onion
2 green chillies
2 potatoes
2 tomatoes
200 grams button mushrooms
2 tablespoons vegetable oil 
2 cardamoms
3 cloves
5 black peppercorns
2 inches cinnamon (broken in to 4 pieces)
1 tablespoon ginger-garlic paste
4 cups water
salt
lime 

Preparation:

Soak rice for 20 minutes.
Chop onion and green chillies. Cut potatoes and tomatoes in to cubes. Cut mushrooms in half.
Fry whole cardamoms, cloves, peppercorns and cinnamon in hot oil on a low flame till they pop. Add onion. Add ginger-garlic paste and fry for 2 minutes. Add tomatoes, potatoes and mushrooms and continue stirring.
Add rice, green chillies, water and salt. Pressure-cook for 3 minutes.

Serve with lime.