Nori (海苔) is a dried edible seaweed used in Japanese cuisine, made from species of the red algae genus Pyropia, including P. yezonesis and P. tenera. It has a strong and distinctive flavor, and is often used to wrap rolls of sushi or onigiri (rice balls).
What is used to wrap sushi?
Makimono Roll – Sushi served in roll form. Makizushi is composed of sushi rice and other ingredients that are typically wrapped in nori (thin sheets of seaweed), but can also be wrapped in an omelette, soy paper, cucumber, or shiso (perilla) leaves. The roll is formed with the aid of a makisu, a bamboo mat. 
What is the green substance encircling sushi?
Wasabi – Wasabi is the green paste that is typically served with sushi. It is highly pungent and should be used sparingly. However, it is essential to your meal. Wasabi aids digestion and keeps fish safe for consumption. It eliminates fishy odors, and sushi rolls are frequently prepared with the addition of wasabi in mind.
Although it is traditional for the nori to be wrapped around the outside of a sushi roll, in North America it is more common to find the nori tucked inside with the other ingredients and wrapped in rice on the outside.
What is the name of the outermost layer of sushi?
Although it is traditional for the nori to be wrapped around the outside of a sushi roll, in North America it is more common to find the nori tucked inside with the other ingredients and wrapped in rice on the outside.