umeboshi
[ oo-muh-boh-shee; Japanese oo-me-baw-shee ]
/ ˌu məˈboʊ ʃi; Japanese ˌu mɛˈbɔ ʃi /
noun, plural u·me·bo·shis.
a salty and tart Japanese condiment made from unripened plums pickled in a brine.