If you can't cook your live crabs right away, keep them in the fridge covered with a damp cloth, advises Xiaojun Guo. That will keep them fresh and alive for a time. Even when you're almost ready ...

When the water boils, place the dish of crabs in the steamer or wok, cover with the lid and cook over a high flame for 10-12 minutes (you may need to steam them in batches). Larger crabs should be ...