To cook jjapaguri, cut premium beef into small pieces, add mirin, sesame oil, salt, and pepper, then sear it for a few minutes in a hot pan. Boil 5 cups of water, add the noodles, cook for 2 minutes, drain half the water, pour in all of the Jjapaghetti seasoning and half the Neoguri seasoning, then let it finish cooking before adding the steak.