The Hasegawa rolling mat is a traditional Japanese tool used in the preparation of sushi rolls, also known as maki rolls. It is typically made of bamboo and comes in various sizes and shapes, but the Hasegawa rolling mat is a rectangular-shaped mat that is 24cm long by 24cm wide.
The mat is designed to help roll and shape sushi rolls into a tight and uniform shape. It is lined with small, thin sticks of bamboo that create a grid-like pattern that helps prevent the rice from sticking to the mat.
To use the Hasegawa rolling mat, the cook would typically place a sheet of nori seaweed on top of the mat, followed by a layer of sushi rice and the desired fillings. The mat is then used to roll the ingredients into a tight cylinder, using the bamboo sticks to shape and compress the roll!