Which ingredient provides the main flavor in traditional Thai green curry?

The main flavor component in traditional Thai green curry comes from green curry paste. This paste is a blend of various ingredients, including green chilies, garlic, lemongrass, galangal, and kaffir lime leaves, which contribute to its distinctive, vibrant flavor profile. Each component of the paste plays a role in creating the complex balance of heat, sweetness, and aromatic notes characteristic of the dish. While coconut milk, fish sauce, and chili peppers are essential in the overall composition of a green curry, the green curry paste is what defines its flavor and character. It is the foundation that ties all other elements together, making it the key ingredient for achieving the authentic taste of Thai green curry.