It doesnt look that difficult.
Cos of the convenience sauce by Woh Hup.
4 smalls crab to 1 bottle of sauce should be the correct proportion. Follow the instruction at the back of the label. You will not go wrong.
On their homepage, there is a recipes section. Check it out! You will find a couple of interesting ideas.
Maybe I will try and make Pineapple Sweet & Sour Prawns for dinner one day.