What is the name of the thin sushi roll with only one filling?

The thin sushi roll with only one filling is called hosomaki. The word literally means “thin roll,” and hosomaki is a type of makizushi made by rolling seasoned sushi rice and one principal ingredient in a sheet of nori.

Common hosomaki fillings include cucumber, tuna, pickled daikon, and fermented soybean paste. Because the roll is narrow, the filling is usually cut into a slim baton that can be surrounded by a relatively small amount of rice. This gives the ingredient a clear role in the flavor and texture of each bite.

Hosomaki is easy to mix up with futomaki, which is a thicker roll containing multiple ingredients. Uramaki is an inside-out roll with rice on the outside, while temaki is a cone-shaped hand roll. Spelling varies between “hosomaki” and “hoso-maki,” but both refer to the same sushi style. In English-language sushi menus, the filling may be added to the name, as in kappamaki for cucumber roll or tekkamaki for tuna roll.