Dice the onions and cut the tomato into long thin strips (medium size onion and tomato)

Crush the garlic and black pepper

Heat the Oil, splutter the mustard and curry leaves. Add a pinch of turmeric

To this add the coriander powder

Add the onions and sautee till pink

Now add the crushed garlic and pepper and salt and tamarind water

Add the tomatoes and sautee till the mix resembles a mush paste

To this add 1 cup of water and wait till it boils.

Add the cleaned crab and pour 2 more cups of water.

Boil till the water is reduced to half and turn off. Leave to absorb for 10 minutes

Serve hot with rice