Boil kombu, katsuobushi, sake, mirin, and soy sauce in a pan, then strain through a sieve to make the dashi soy sauce.

Hanwoo 1++ Sukiyaki
An ideal sukiyaki recipe using 1++ grade Hanwoo beef, cooked with authentic Japanese soy sauce, various vegetables, and meat, then dipped in egg.
What You'll Need
Instructions
Cut the tofu into 12 pieces about 1cm thick, move to a tray, and sear with a kitchen torch.
Rinse the shirataki noodles well, drain, and set aside.
Prepare the green onions by cutting only the white parts diagonally into 5cm lengths.
Remove the stems from the shiitake mushrooms, tear them into bite-sized strips, and score the tops.
Trim the enoki mushrooms, golden enoki mushrooms, and crown daisy, then cut into bite-sized pieces.
Grease the pan by melting the beef fat.
Place the prepared vegetables, tofu, shirataki noodles, and Hanwoo beef in the pan, and cook while adding the dashi soy sauce and sugar.
Dip the cooked ingredients into a beaten egg to eat.
After eating the meat and vegetables, boil the udon noodles and cook them in the remaining sauce.