Put the crab into the boiling stock & boil for 10 mins
Cod & discard toes and stomach sac bellow the shell near the mouth.
Cut the crab into 4 pieces.
Make paste of ingredients
Heat oil in the wok add grounded paste and cook on low flame. Add crabs and toss.
Add tamarind water and reduce on slow fire.
Add coconut milk, bring to boil.
Serve hot.