Clean the octopus by removing its innards and cutting it into bite-sized pieces. Rub coarse salt onto the octopus to remove slime and odor.

In a pan, stir-fry the octopus, vegetables, and seasonings with kelp broth instead of oil.

Add kelp broth and stir-fry on high heat until the mixture thickens and the octopus is cooked.

Place a small piece of butter in a hot stone bowl.

Add warm rice to the stone bowl, then top with the stir-fried octopus mixture. Heat until sizzling, then cook for an additional 3-4 minutes.

Garnish with seaweed flakes, cucumber slices, shredded lettuce, sesame oil, and sesame seeds. Mix well before serving.