This is Kombu, Kelp.
Left - dried, just like this when you buy at grocery stores.
Right - after cooked, after soaked. 7-8 times bigger than dry one.
Kombu is normally for dashi, soup stock. But we eat sometimes.
But there is no taste, no flavor, no salty, no sweet. It is hard to eat.
This is a typical healthy food, Nimame. Nimame is braised soy bean. I just add konbu.
You know soy bean is good for health, especially for women.
And konbu is mineral and vitamins, all natural and no side effect.
This is from Livestrong.com
I sometimes just eat dried kombu. It is salty and chewy but just eat. You had better choose thin one. Don't try with thick one, hard to chew.
Be healthy! Right?