おはこ

おはこ 【十八番 】〖専門 〗a specialty, ｟英 ｠ a speciality ; 〖気に入りのもの 〗a favorite ; 〖得意 〗one's forte /fɔ́ːt /.▸ おはこの話をする [始める ]get on [ride ] one's hobbyhorse .▸ その歌は彼のおはこだ That song is his favorite .That is his (╳most ) favorite song .