Umeboshi — salted and often dried pickled ume (Japanese plum), commonly eaten with rice or used in cooking.
お弁当に梅干しを一つ入れた。
I put one umeboshi in my lunchbox.
母は毎年梅干しを漬けるのが趣味だ。
My mother makes umeboshi every year as a hobby.
梅干しは塩分が強いので食べ過ぎに注意してください。
Umeboshi are high in salt, so be careful not to eat too many.
刻んだ梅干しをおにぎりの中に入れた。
I put chopped umeboshi inside the rice ball.