Wagyu beef tataki

Name: Wagyu beef tataki
Prep time: 15 min
Cook time: 5 min
Total time: 20 min
Cuisine: Japanese, Asian
Ingredients: 500g piece Blackmore wagyu beef sirloin; 2 tbs olive oil; 2 tsp togarashi (Japanese spice mix); 4 red radishes, cut into matchsticks; 1/2 daikon radish (mooli), cut into matchsticks; 120g punnet shiso cress or small Asian herb leaves to garnish; 2 tbs Japanese soy sauce; 1 tbs each rice vinegar and lime juice; 1/2 tsp wasabi paste, plus extra to serve; 1 garlic clove, crushed; 1 tsp grated ginger; 1 tsp caster sugar; 1/2 tsp sesame oil