Soak the dal for about an hour. Rinse well and drain.
Transfer the dal to a pressure cooker, add the lau cubes and a sprinkle of turmeric powder. Pour 2 cups of water, cook till 1 whistle. Allow the steam to release on its own.
Heat 1/2 tbsp oil in a pan. Throw in the panchforon, bay leaves and dry red chillies. Allow the spices to splutter.
Carefully pour the cooked dal and lau into the pan. Throw in the green peas. Add a cup or so of warm water till you get the desired consistency. Sprinkle in the salt, simmer for 3-5 odd minutes.
Adjust seasonings. Finish off with a generous drizzle of mustard oil.