Pictured below are roasted and unroasted curry powder. For the Sri Lankan Crab Curry unroasted curry powder which is pictured on the right already mixed with the cayenne pepper is used.
Sauté the onion and garlic until it is translucent. Then add tomato, onion, ginger and green chillies.
Then add the unroasted curry power, salt, pepper and cayenne chilli powder and mix well. Add crabs and blend all ingredients. Add about 3 tablespoons of water and mix well. When the crab starts to turn color add coconut mild and cook for another 7-10 minutes.