Tuna Tataki with Carrot, Cucumber and Sesame Wasabi Dressing

What you will need

2 tsp each white sesame seeds and black sesame seeds

1 tsp togarashi (see note)

250 gm piece of sashimi-grade tuna (about 10cm long, 4cm square)

60 ml (¼ cup) peanut oil

1 Lebanese cucumber, seeds removed, shaved into ribbons with a peeler

1 carrot, shaved into ribbons with a peeler

½ cup (loosely packed) coriander leaves

2 tbsp soy sauce

1 tbsp rice wine vinegar

1 tbsp sesame oil

2 tsp mirin

¼ tsp wasabi powder