You can talk about whether your favorite food has changed as you've grown up. If it has, explain what your favorite food was as a child and what it is now, and give reasons for the change, such as changing tastes, health reasons, or new experiences.
好きな食べ物が成長するにつれて変わったかどうかについて話すことができます。もし変わったなら、子供の頃の好きな食べ物と今の好きな食べ物を説明し、味の好みの変化、健康上の理由、新しい経験など、変化の理由を述べてください。