Though kelp is a kind of seaweed, it is different from seaweed in many aspects. Kelp is also referred to as large seaweed, which belongs to the brown algae. Classified in the Laminaria order, about 300 genera of Kelp are known. Some of the kelp species are very long, and can even form kelp forests.

You can buy Kelp online here.

Substitutions: If you don’t have dried kelp, you can just use anchovies to make broth. As a side dish, you can use seaweed to make a similar dish. 1 piece of kelp (5cm X 5cm) can be used to make 3 cups of anchovy broth.