Spoon them into a bowl of iced water immediately and leave to cool. Meanwhile combine the soy sauce, vinegar and sugar with 50ml/2fl oz water in a large jar. Screw the lid on tightly and shake for ...
Divide the soy sauce between four to six individual dipping bowls and pour the oil into each dish, making sure to distribute the garlic evenly. Serve the steamed crabs with the dipping sauce.