Tuna Seared with Matsuhisa Dressing and Yuzu Mayo - James Martin Chef

Ingredients

• 2 x200g tuna fillet
• Drizzle veg oil
• Salt and pepper
• 1 onion very finely diced
• 5 tbsp soy sauce
• 2 tbsp rice vinegar
• 2 tbsp water
• 1 tsp caster sugar
• ½ tsp mustard powder
• 4 tbsp veg oil
• 4 tsp sesame oil
• 1 lime juice and zest
• 3 egg yolks
• 1 tbs Dijon mustard
• 1 lime juice only
• 200ml veg oil
• 1 tsp yuzu
• Micro coriander