Cold Soba Noodles (Zaru-soba)

Boil mirin in a pan. Add dashi and bring to the boil. Add soy sauce and remove from the heat. Pour sauce into a jug. Cut the seaweed in long strips of 3 to 4 cm. Finely chop the onions. Soak for 10 minutes in water and then strain. Bring the water to the boil in a large pan. Add the noodles and stir slowly, so that they don’t stick. Return to the boil and cook until "al dente”. Take the noodles out of the hot water and drain them immediately after having poured cold water onto them. Serve noodles in bamboo dishes or in normal dishes and decorate with seaweed. Dish the dip out into small bowls; serve onions, wasabi and chilli pepper with it. Season the dip as you like, then dip the noodles into it and eat.