This is not an original japanese recipe, but quite a simplified version. Very easy and fast!
Soba noodles soup
(for 2 portions)
100 gr Soba noodles
1 tablespoon of oil (canola, sunflower...)
2 scallions cut in thin slices
7 mushrooms sliced (shitake is a good option)
2 cups of fresh baby spinach
4 tablespoons of Miso paste (I used the dark brown type)
salt, pepper and coriander powder (grounded seeds)
Cook the soba noodles in boiling water for around 4-5 min. After cooking drain and set aside. In a pan place the oil with the chopped scallions until they are soft. Add the mushrooms and stir for a couple of minutes. Add boiling water (1L more or less) and bring to a boil. Add the miso paste and stir well to dissolve. Add the cooked soba noodles and bring to a boil again for a couple of minutes. Turn of the heat and add the spinach stirring a bit. The spinach is not supposed to cook, but only soften in the hot water. Adjust the seasoning with salt, pepper and grounded coriander seeds (careful the miso paste is already quite salty, usually I do not add any more salt to the soup). Enjoy!
Note: The recipe is quite versatile and any other vegetables can be added (paprika, zucchini, bok-choi,...). For a more original recipe you can add a bit of Mirin sauce and soya sauce. Also great topped with some toasted sesame seeds!