How to make it
Add the sake to a small pot and bring it to a boil. Allow it to boil for a few seconds to let the alcohol evaporate.
Then add in the mirin, Lee Kum Kee Panda Brand Dipping Soy Sauce, kombu, and bonito flakes. Bring the mixture to a boil then lower the heat to simmer. Simmer the sauce for 5 minutes, then remove it from the heat. Let the sauce cool completely then strain and set aside for later.
Bring a pot of water to a boil. Add in the dried soba noodles and cook them according to the package instructions. Drain the soba and rinse it under cold water until they are chilled. Drain any excess water.
Portion the soba and garnish with shredded nori and sliced green onions. Serve each portion with a cup of the dipping sauce on the side. Enjoy!