Citrus Unshiu, also known as the Satsuma mandarin or the Japanese mandarin, is a citrus fruit that originated in Japan. The Satsuma mandarin has a loose skin that is easy to peel, making it a popular choice for snacking. There are several other synonyms for this fruit, including seedless mandarin, easy peeler, and zipper skin mandarin. Additionally, it is sometimes referred to as naartjie, especially in South Africa. The Satsuma mandarin has a sweet and tangy flavor that is enjoyed around the world, and it is often used in recipes for salads, juices, and desserts.