This is a foil-wrapped halibut dish that seals in all the flavors using aluminum foil. As it heats, the foil gradually inflates in a fascinating way. When opened, it releases a wonderful aroma combining garlic, karasumi, and fresh seafood. Ice cubes serve as a water source, making the sealing process easier, and in winter, this can be served at the table while still steaming hot and beautifully inflated.