Kombu is a food that comes from the sea, and it's a type of seaweed. Imagine going for a swim and seeing these long green or brown strips in the water - that's what kombu looks like! But it's not just a snack for fish, people can eat it too!
Kombu is really healthy, kind of like taking medicine that helps your body. It has things called minerals and vitamins that help make you strong and healthy. Kombu can help you grow taller and it can make your bones stronger.
If you're not sure how to eat it, you can try putting it in soup or stew. Kombu has a special flavor that can make your food taste really yummy! And it's really easy to add to your food - just let it sit in the water or broth for a while and it will soak up all the flavors.
So, in a nutshell, kombu is a kind of seaweed that can help keep you healthy and tastes delicious in soup!