Quickly blanch the chicken in boiling water and transfer to the master stock saucepan. Cook chicken in masterstock, turning after 20 minutes. Turn again after another 5 minutes, then sit in stock for a further 15 minutes with the heat off and the lid on. Remove chicken from the master stock and cut in half. Pour enough oil into a wok until it is one third full. Heat over medium-high heat. Once hot, deep fry the chicken, basting constantly until the skin has turned a caramel brown, drain well and drizzle over chilli caramel. Cut chicken with a cleaver Chinese style through the bones and meat.