You can buy a crab live and boil it yourself ... Canned crabmeat is useful for adding to pasta or making quick crabcakes. Male crabs tend to have larger claws and more white meat.
You need three to four pairs for this dish. If using frozen crab meat, let it thaw in the fridge. Cut the long beans into 1cm (7/16in) pieces. Cut the chillies in half lengthwise, then scrape out ...