Ingredients:

1kg rock crab (ketam batu) - clean well and cut into 2 after removing hard shell

Grind to  a paste:
6 red chillies
10 chilli padi
6 shallots
2 cloves garlic
2 heaped tbsp salted soya beans (taucheo) - rinse and drain

Ingredient for frying:
4 shallots - sliced
2 cloves garlic - chopped
2 stalks serai (lemon grass) - crush

3/4 cups water
2 level tsp sugar (or to taste)
3/4 tomatoes - cut into wedges
2 red chillies     } slit halfway
2 green chillies  }
4-5 sprigs big coriander leaves (daun ketumbar kasar) 
                                                - break into 1cm pcs for garnishing
4tbsp oil

Method:
Heat oil. Add ingredient for frying. 
When onions are brown add ground ingredients and mix well. 
Put in crabs and coat with the spices. 
Add sugar and 1/4 cup water from allowance.
When mixture gets dry, add the rest of the water and keep stirring until crabs
are coated with the thick gravy.
Just before removing from heat, add the tomato and chilli and mix.
Serve garnished with coriander leaves.

Note : Salt has been omitted as the taucheo is very salty. 
          However adjust according to taste.