Preheat the oven to 200 C and start then start to whisk the miso, sesame oil, lemon juice and ginger together.
Brush 1/2 the dressing over the salmon, bake in the oven for 10 mins.
Shave the cabbage with a mandolin or sharp knife. Mix with the rest of the dressing.
Rinse the buckwheat noodles, cook as per pack instruction. Rinse after. Slice the cucumber into sticks.
Serve together with sesame seeds and chilli flakes.