Place the soba noodles in boiling water and boil for 5 minutes or according to the packet. Drain and run under cold water so they become completely cold. Place to one side.
Mix the chinkiang black rice vinegar, light soy sauce chilli and sesame oils, grated garlic, sugar and crunchy peanut butter iin a bowl and stir to form a dressing. Taste and add salt if required.
Prepare the cucumber noodles or chop the cucumber into thick sticks
Heat a small pan and when it its hot add the dried chilli and allow to darken slightly in colour. I tend to keep the seeds in but remove if you want less heat.
Add 1/2 tsp of chilli oil and the spring onions for a minute and then take off the heat.
In a mixing bowl, add the cold soba noodles, the cucumber noodles, the dressing and the dried chilli and spring onions. Gently fold in together and place in two bowls. Sprinkle some black sesame seeds on top.