Ume is a Japanese fruit that is also known as a sour plum. It is often used in Japanese cuisine, including as an ingredient in pickled plums and as a flavor in traditional Japanese candy. There are several synonyms for the word "ume," including Japanese plum, sour plum, and Chinese plum. Other terms that are sometimes used to refer to this fruit include Prunus mume, Japanese apricot, and ume blossom. Some people also use the term "umeboshi" to refer to pickled plums that are made using this fruit. Regardless of the term used, the unique and tangy flavor of ume is widely appreciated in many different culinary traditions.