[Problem] To provide a patterned nori sheet that can be used for rice balls and nori-wrapped rice rolls, a nori-wrapped rice ball using said nori sheet, a rice ball set, and a nori-wrapped rice roll. [Solution] A patterned nori sheet, wherein a cutout trace pattern is formed on one or more places of the nori sheet by cutting out a cutout pattern using laser processing and when said nori sheet with the cutout trace is wrapped or applied on a rice ball, a portion of the front surface or the back surface of the rice ball is exposed from the cutout trace pattern. A patterned nori sheet, wherein a grilled pattern is formed on one or more places of the nori sheet using laser processing, is also possible. A nori-wrapped rice ball in which the cutout trace patterned nori sheet is wrapped or applied on the front surface or back surface of the rice ball so that a portion of the front surface or the back surface of the rice ball is exposed from the cutout trace pattern.
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