Clean the crabs and cut in half, discarding the spongy "dead man's fingers." Smash the claws with a cleaver to allow the seasonings in. Deep fry the crab until half-cooked, drain and set aside.
Heat a wok, melt butter and put in shallots, garlic, salted soy beans, dried prawns, black pepper, curry leaves and chilies. Saute till fragrant, then add crab and the remaining ingredients. Cook for 5-10 minutes until the crab is done.
Notes
I used stone crab for this recipe because I just love the big, juicy, and succulent claws of stone crabs, and this back pepper crab recipe is perfect for those claws!