2. Cold dish: dry Undaria pinnatifida, soak it in cold water for 5-6 minutes, filter off the water and mix it with other ingredients.
3, stew: dried Undaria pinnatifida, soaked in cold water for 5-6 minutes, stewed with kimchi water for 2-3 minutes.
4. Soup or noodle dishes: Before cooking, directly put a proper amount of dried Undaria pinnatifida into the pot and cook for 2-3 minutes.