Boiled prawn wontons with chilli dressing

Name: Boiled prawn wontons with chilli dressing
Ingredients: 225 g raw prawns, from sustainable sources; 1 spring onion; 1cm piece of ginger; 1½ teaspoon shaoxing wine or dry sherry; 3 tablespoons light soy sauce; ½ teaspoon white sugar; ½ teaspoon sesame oil; 24 fresh wonton wrappers (about 7cm square); SICHUAN SEASONING; 1 tablespoon sichuan pepper; 3 tablespoons sea salt; CHILLI DRESSING; 1 teaspoon dried chilli flakes; 40 ml vegetable oil; 20 ml light soy sauce; 20 ml rice wine vinegar; 1 teaspoon white sugar; 1 pinch of sichuan seasoning