firstly, in a large kadai add coconut oil or any oil of your choice.
furthermore, add all the tempering ingredients like methi, mustard, urad dal, red chilli, curry leaves and hing. saute till they splutter.
after that, add crushed cumin seeds, crushed garlic cloves and green chilli.
saute till garlic turns slightly golden brown.
furthermore, add chopped tomatoes and tamarind extract.
also add in turmeric powder and salt to taste.
give a good mix and boil for atleast 15 minutes on medium flame.
after that, add 2 cups of water to adjust the consistency and quantity. get to a boil.
then add crushed black pepper.
additionally, add a cup of coconut milk and give a good stir.
simmer for 2 minutes and turn off the flame. do not boil too much as coconut milk may curdle.
finally, garnish with fresh coriander leaves and serve with rice.