Clean the crab by removing the shell and chopping into pieces; crack the claws and legs by hitting with the carapace
In a wok, heat oil over a low heat. When hot, fry garlic until aromatic and golden. Add the crab and stir fry for 3-5 minutes or until cooked through. Mix seasoning sauce ingredients with chicken stock. Add to the wok and bring to a boil, stirring. Boil for 3-5 minutes.