Green Chicken Curry with Coconut Milk

Name: Green Chicken Curry with Coconut Milk
Ingredients: 10 green chilies, thinly sliced; 1 teaspoon shrimp paste; 2 tablespoons lemon grass; 2 pieces galanga root; 1 teaspoon lime zest; 12 cup cilantro leaves; 6 shallots; 6 garlic cloves; 1/2 teaspoon salt; 1 teaspoon cinnamon; 2 cilantro roots; 5 tablespoons vegetable oil; 8 chicken thighs, boned; 1 cup water; 1 teaspoon tamarind concentrate; 2 tablespoons Thai fermented fish sauce; 4 tablespoons cornstarch; 1/2 cup coconut milk; 4 tomatoes, chopped; Fresh coriander