1: In a mixer grinder, add all the ingredients in the masala paste and grind it into a smooth paste.
2: Heat oil in a pan, add onion and saute until golden brown.
3: Add tomato and cook until it's mushy.
4: Add the masala paste and cook for 2 mins.
5: Add turmeric powder, chilli powder, coriander powder, and salt and mix well.
6: Add the crab, mix well and add water. Cover and cook for 10 minutes.
7: Add the black pepper powder and curry leaves, mix well and remove from the heat.
