Add the black treacle, balsamic vinegar, soy sauce, apple juice and tomato passata, and bring to the boil. Once it has reached a boil, reduce to a simmer and cook over low heat for 30–40 minutes ...

Add the light soy sauce, oyster sauce, black vinegar, Shaoxing wine and sugar to the bowl and mix to combine. This is your sauce. Heat a splash of vegetable oil in a non-stick frying pan or wok ...