I know this may be of no use to you other than to bump back to the top but we have an oriental supermarket nearby and they do various sauce packets that generally work out at 1 syn each between 4 (or 2 syns between 2 in our house!!) our fave is the black pepper sauce one which we have with chicken, loads of peppers, onions and spring onions. We also put pak choi with it if we have sone in to bulk up the sf.