According to science humans are the only mammals that are attracted to sour. Chinese medicinal believes says that 'sour' can help digestion and whet the appetite. In traditional Chinese cuisines it is often used for balance but in south East Asian versions of Chinese dishes it is often quite forward even becoming part of the name of a dish particularly in traditional Peranakan Chinese cuisines. A cuisine (and a people) that Christine discovers for the first time. Christine joins Malaysian celebrity Chef Wan for a one of a kind experience, cooking in a traditional old Peranakan kitchen and making the food of Chef Wan's heritage.