One's favorite food; a food someone especially likes.
寿司は私の大好物だ。
Sushi is my favorite food.
彼女の大好物はチョコレートなので、誕生日にたくさん買った。
Her favorite thing to eat is chocolate, so I bought a lot for her birthday.
子どもの大好物を作ってあげると喜ぶ。
If you make a child's favorite food for them, they will be happy.