A California roll is a type of sushi that originated in the United States, specifically in California. It typically consists of vinegared rice, crab meat (often imitation crab), cucumber, and avocado, all rolled in a sheet of nori (seaweed). The roll is usually served with soy sauce, pickled ginger, and wasabi. California rolls are popular for their mild flavor and are often considered a good introduction to sushi for those who may be hesitant to try raw fish. They are commonly found in sushi restaurants and grocery stores, making them accessible to a wide audience.