is a type of tsukemono

Tsukemono

are Japanese pickles. They are served with rice as okazu with drinks as an otsumami , as an accompaniment to or garnish for meals, and as a course in the kaiseki portion of a Japanese tea ceremony....

 (Japanese

Japanese cuisine

Japanese cuisine has developed over the centuries as a result of many political and social changes throughout Japan. The cuisine eventually changed with the advent of the Medieval age which ushered in a shedding of elitism with the age of shogun rule...

 pickle

Pickling

Pickling, also known as brining or corning is the process of preserving food by anaerobic fermentation in brine to produce lactic acid, or marinating and storing it in an acid solution, usually vinegar . The resulting food is called a pickle. This procedure gives the food a salty or sour taste...

). It is made from ginger

Ginger

Ginger is the rhizome of the plant Zingiber officinale, consumed as a delicacy, medicine, or spice. It lends its name to its genus and family . Other notable members of this plant family are turmeric, cardamom, and galangal....

 cut into thin strips, colored red, and pickled in umezu (梅酢), the pickling solution used to make umeboshi

Umeboshi

Umeboshi are pickled ume fruits common in Japan. 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. Umeboshi are a popular kind of tsukemono and are extremely sour and salty...

; the red color is derived from red perilla

Perilla

Perilla is the common name of the herbs of the genus Perilla of the mint family, Lamiaceae. In mild climates, the plant reseeds itself. There are both green-leafed and purple-leafed varieties, which are generally recognized as separate species by botanists. The leaves resemble stinging nettle...

. It is served with many Japanese dishes, including gyūdon

Gyudon

, , is a Japanese dish consisting of a bowl of rice topped with beef and onion simmered in a mildly sweet sauce flavored with dashi , soy sauce and mirin . It also often includes shirataki noodles, and is sometimes topped with a raw egg...

, okonomiyaki

Okonomiyaki

is a Japanese dish containing a variety of ingredients. The name is derived from the word okonomi, meaning "what you like" or "what you want", and yaki meaning "grilled" or "cooked" . Okonomiyaki is mainly associated with Kansai or Hiroshima areas of Japan, but is widely available throughout the...

, and yakisoba

Yakisoba

', literally "fried noodles", is a dish often sold at festivals in Japan, but originates in China. The dish was derived by the Chinese from the traditional chow mein, but has been more heavily integrated into Japanese cuisine like ramen...

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Beni shōga is not the pickled ginger served with sushi

Sushi

is a Japanese food consisting of cooked vinegared rice combined with other ingredients . Neta and forms of sushi presentation vary, but the ingredient which all sushi have in common is shari...

, which is called gari

Gari (ginger)

is a type of tsukemono . It is sweet, thinly sliced young ginger that has been marinated in a solution of sugar and vinegar. Gari is often served and eaten after sushi, and is sometimes called sushi ginger...

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