A ? are the same thing, but the kelp is from the heel to slightly, uneven thickness; kelp angle is more uniform, the thickness are similar, cooking is also more convenient

2 ? Kelp head is a flat cylindrical stalk, the same flavor, is thicker than the thin place.

three ? The difference between the root and the leaf varies from person to person, some people like to eat the root, some people like to eat kelp head.