POM juice is a satsuma mandarin juice produced by Ehime Beverage Inc, based in Ehime prefecture. Ehime prefecture is one of the major producers of satsuma mandarin in Japan and POM juice is the most famous satsuma mandarin juice in Japan. There is a joke that the house in Ehime has 3 faucets(taps); cold water, hot water and POM juice.
Due to POM juice has so high reputation, there are many snacks which collaborate with POM juice. Collon POM juice flavor is only sold in Shikoku, where Ehime prefecture is located. There are so many flavors which are restricted in certain regions, which attracts tourists to buy when the visit these regions.