"Hosomaki" (, "thin rolls") is a small cylindrical piece, with "nori" on the outside. A typical "hosomaki" has a diameter of about . They generally contain only one filling, often tuna, cucumber, "kanpyō", nattō, umeboshi paste, squid with shiso (Japanese herb). "Kappamaki", () a kind of "Hosomaki" filled with cucumber, is named after the Japanese legendary water imp fond of cucumbers called the kappa. Traditionally, "kappamaki" is consumed to clear the palate between eating raw fish and other kinds of food, so that the flavors of the fish are distinct from the tastes of other foods.