Ulli sambhar...!! (Simplest Sambhar)

Ingredients:
Toor Dal- 1 cup
Pearl onions/cheriya ulli - 10 whole
tomato - 2 to 3 chopped
coriander pd - 1 tsp
red chilly pd - 1 tsp
turmeric pd - 1/2 tsp
sambhar pd - 3 tsp
asofoetida/heeng/kayam - 1/2 tsp
water - 3 cups
tamarind 1 lemon size soaked in water
curry leaves
coriander leaves
oil
salt
dry red chillies -2 to 3

Method:
Pressure cook toor dal with enough water upto 3 whistles. Keep it aside.
In a kadai, saute whole pearl onions in 1 tbsp oil. Add a pinch of salt to it which helps the onion to cook fast. Saute well till onion turns transparent and light pink. Add chopped tomatoes and saute till the tomatoes turns soft and mushy and is cooked. Add this mixture to the cooked toor dal and keep the pressure cooker on fire. Add 1tsp red chilly pd, 1/2 tsp turmeric pd, 1 tsp coriander pd, 3 tsp sambhar pd, 2 pinch of heeng(asafoetida), salt, coriander leaves, tamarind water and cook for another 2 whistles. Turn off the gas and let it cool.
In a small fry pan put 2 tsp oil. Add mustard seeds, let it splutter. Off the gas, throw in curry leaves and whole red chillies and a pinch of asofoetida. Mix well and pour this in sambhar. Cover with lid. Serve with rice.