Refers to a person's or group's strongest skill or trademark performance. Often used in a slightly self-deprecating or humorous way when talking about one's own habits.
His specialty is pretending to sleep in any meeting.
Being late is her forte.
specialty of a kabuki school
Original meaning: a signature performance piece or technique passed down within a kabuki family or school. Now also used figuratively for any group's trademark skill.
This piece is known as the specialty of this kabuki family.