Green onion; chopped Puree the tomatoes in a food processor. Set aside. Then puree the fish with the coconut milk. Put tomatoes, blended fish and coconut milk, curry paste, fish soy, and lemon juice in a soup pot. Bring to a boil over medium heat, reduce heat to low, and simmer for 10 minutes. Sprinkle with fresh coriander leaves or chopped green onion tops before serving.