Ingredients: Japanese plums 80% (Prunus mume), sea salt, shiso leaves (Perilla frutescens).
Umeboshi are pickled ume fruits common in Japan. The word umeboshi is often translated into English as 'salted Japanese plums', 'Japanese plums' or 'preserved plums'. Ume is a species of fruit-bearing tree in the genus Prunus, which is often called a "plum", but is actually more closely related to the apricot.