Take chow chow, dal, turmeric powder and salt in a pressure cooker. Add in some water. Cover and pressure cook for 3 whistle. Switch off the heat and let them steam escape all by itself.
While the dal and veg is cooking, take all the ingredients for grinding in a blender and puree them to a smooth paste.
Open the cooker and add the coconut masala. Mix well and simmer for 5 to 10 mins.
Now make tempering by heating oil and crackling mustard, urad dal and curry leaves.