Crab and soba salad with ginger miso dressing

Name: Crab and soba salad with ginger miso dressing
Ingredients: 270 gram soba noodles; 1 (130g) lebanese cucumber , seeded, sliced thinly; 1 small_piece (100g) red onion, chopped finely; 1 medium_piece (120g) carrot, cut into matchsticks; 50 gram baby spinach leaves, sliced thinly; 400 gram fresh crab meat; 1 tablespoon drained pickled ginger, sliced thinly ginger miso dressing; 6 centimetre (30g) piece fresh ginger, chopped coarsely; 2 tablespoon drained pickled ginger; 2 clove garlic; 1/3 cup (100g) yellow miso paste; 1/2 teaspoon wasabi paste; 1/2 cup (125ml) rice vinegar; 1/2 cup (125ml) vegetable oil; 2 tablespoon water