Gwamegi is a special type of fish that comes from Korea. It starts out as a giant fish called a Pacific herring, which is caught in the ocean. Then, it gets cleaned and processed in a special way to become gwamegi.
To make gwamegi, the fish is soaked in a salty solution for a long time until it becomes very dry and stiff. This is called "fermenting." Think of it like drying out a sponge until it becomes hard and crunchy. The gwamegi fish is kind of like a hard, dry sponge that you can eat!
Although gwamegi might not look or smell very appetizing to some, people in Korea love it and think it's very delicious. It's often served as a snack or a side dish, and people usually eat it with rice and vegetables.
However, it's important to be careful when trying new foods, especially if you are allergic to certain fish or seafood. So always check with a grown-up before trying gwamegi or any other new food!