In a sauce pan, add vegetable stock or water.
Add lemon grass(slightly crush the lemon grass to get the flavor well), ginger, onion, green chillies and bay leaves.
Allow it to boil and make it less in to a 1 cup.4) Remove from fire and strain it.5) Boil again the stock, add the seafood, fish sauce, pepper, soya sauce, vinegar and cook the mixed seafood.:- Do not over cook seafood as it will become harder.6) Add the coconut milk and just give a boil.
Add the corn starch and beaten egg and thicken it.8) Serve hot.