How to make soba 

• Put all the mentsuyuu ingredients into a saucepan and bring to a boil.
• Turn down the heat and cook on low for 5 minutes.
• Strain and set aside.
• Boil the soba noodles according to the packet.
• Drain and rinse under cold water.
• Slice the scallions as thinly as possible.
• Grate the daikon and nagaimo and place in separate dishes. 
• For the dipping soup, dilute with 3 parts iced water and 1 part mentsuyuu.
• Serve the soba noodles on a sieve. Traditionally a bamboo rolling sieve is used but anything is okay!