Wash and soak the dal for a few hours. ( It is Ok not to soak if you haven’t planned ahead..)
In a pressure cooker bring all the ingredients, except coriander and lemon) together.
Add 2 cups of water.
Cook on medium flame for 4-5 whistles or until the daals are well cooked.
Once the pressure subsides, open the lid, using an immersion blender churn the soup to a homogenous mixture.
Add water if required to bring it to a thick soup like consistency. After adding water cook for couple of minutes to bring it to a gentle simmer.
Adjust the seasoning to taste.
Serve piping hot garnished with some chopped coriander and squeeze of lemon juice.