Luke Nguyen: I have seen a lot of different versions of this hoisin dipping sauce. Many dilute it with water or add cornflour (cornstarch) for thickening. I have also seen peanut butter added to it. This recipe was created by my genius little brother, Leroy. He and Mum were messing about with ingredients in the kitchen one day and he had a moment of inspiration to add milk. We now use this recip