- firstly, in a large kadai heat 2 tbsp oil and splutter 1 tsp mustard, ½ tsp cumin, ¼ tsp methi, 1 dried red chilli, 1 inch cinnamon, 4 cloves, pinch hing and few curry leaves. 
- keeping the flame on low add spices. 
- further, add 1 cup water and stir well. 
- add in 4 cubed potato and 1 tsp salt. mix well. 
- cover and boil for 10 minutes or until the potatoes are almost cooked. 
- furthermore, add ¼ cup tamarind extract and 1 tsp jaggery. stir well. 
- additionally add ½ cup water, cover and simmer for 10 minutes. 
- cook until the potato is cooked completely. 
- mash few of the potatoes adjusting consistency as desired. 
- add in 2 tbsp coriander and mix well. 
- finally, enjoy batata nu shaak with steamed rice or roti.