1. Using a vegetable peeler,finely slice cucumber and carrots lengthways into ribbons. Set cucumber aside and cut carrots into a fine julienne. Combine carrots in a bowl with sugar and salt,mix well and leave to stand for 15 minutes.
2. Add celery to a small saucepan of boiling salted water and blanch for 30 seconds. Drain,refresh under cold water and drain again. Set aside.
3. Combine vinegar and extra sugar in a small,heavy-based saucepan and stir over heat until sugar dissolves. Simmer,uncovered for about a minute or until slightly reduced. Set aside to cool before stirring through pickled carrot.
4. In a bowl,combine reserved cucumber,pickled carrot mixture,celery,cabbage,spring onion,bean sprouts and herbs. Pour over combined soy sauce and lemon juice and mix well. Arrange in a salad bowl,sprinkle with roasted sesame seeds,Sichuan pepper and salt and serve immediately.
To make the Sichuan pepper and salt: Dry-roast peppercorns and salt in a heavy-based pan. When the peppercorns begin to pop and become aromatic,take off the heat. Allow to cool,then grind to a powder in a mortar and pestle or a spice grinder (makes 4 tbsp).
Serving suggestion:Add some sliced, poached lobster to this refreshing coleslaw.