Prepare ingredients such as oatmeal, seaweed, and canned tuna.
Soak dried seaweed in water and rinse thoroughly.
Pour water into a pot and bring to a boil, then add the soaked seaweed.
Add canned tuna and oatmeal, stirring well while cooking.
Season with salt or your preferred seasonings.
Once all ingredients are cooked and the texture is thick, it's ready to serve.