Put water, coconut milk, galangal root, lemon grass (if using dried) in the pot, bring to boil and switch to a medium heat, keep it simmering for 5-10 minutes to release flavours(stir frequently)
Add chicken or sea food, lime leaves, lemon grass (if using fresh), fish sauce and bring to boil again
Let chicken to cook (use less time for seafood or fish) and turn off the heat
In the bowls add crush chilli peppers-seeds removed (Thai or any available), or do not crush, if you do not like it to be spicy. Squeeze 1/3-1/2 of lime in each bowl.
Serve hot with parsley or coriander leaves and tomatoes)