Chye Buey (Stewed Leftover roasted meat with Salted Green Mustard)

Ingredients (leftover roughly estimated) 1/4 of roasted duck 1/4 of roasted chicken Any leftover sweet and sour meat Some prawns – pan fried 1/2 cabbage – tear into big pieces 7-8 stalks Green mustard with roots (tua chye) 3-4 shreds salted vegetables 5 pieces asam keping 8 dried chillies Roasted gravy (leftover) Water (optional) Sugar…