Once the temperature is correct, pop the chicken back into the oven for a further 15 minutes. Meanwhile, for the sweet potato and mint mash, boil the sweet potatoes for about eight minutes or so ...

600 grams (6 to 7 large) satoimo yams, 1 chicken thigh, fine strips of ginger quartered to the size of thumb, Seasoning A (3 Tbsp each of sake and sweet mirin sake, 3 to 3 and 1/2 Tbsp of soy ...