Njandu or Nandu Curry Kerala Style refers to a curry from Kerala, India made from crabs cooked with usual spices, such as Kadugu (black mustard seeds), red and green chilies,  lots of onions, Turmeric and of course the Curry Leaves

Njandu or Nandu , sometimes also spelled as Jhandu is the Malayalam name of Crab. 

Below are pictures of Njandu Curry cooked by my friend in Allepey, Kerala, India when some fishermen gave her their leftover produce for the day from an overnight of fishing. Looks and tastes so appetizing! I miss my home, the Philippines where Crabs are always available in the markets.