1. Bring a large pot of water to the boil, add razor clams and cook for 1 minute. Remove the clams and submerge them in an ice bath to stop the clams from cooking and retaining its texture.
2. Remove the clams from its shell then place in a large mixing bowl discarding the shells. Add pickled vegetables, onion, mixed herbs, fried shallots, fried garlic chips, garlic oil and dipping fish sauce. Mix well, transfer to a plate and garnish with peanuts and chilli.