Next add the chicken back in along with the red pepper, paprika, rice wine vinegar, ketchup, sugar and half the sesame seeds – heat and stir for a minute. Then pour in all of the mango juice (oh yeah) – bring to the boil and sprinkle the corn flour avoiding lumpage – stir. If you feel that a little more sauce is required, carefully add some water – it will reduce and thicken moving forward.