Stir-fried tuna with Asian marinade - United Kingdom

Ingredients

• 400 g (0.9 lbs) fresh tuna cut into 4 equally large squares. Use the leftovers for a tasty tuna tartare with avocado.
• 1 dl (0.4 cup) white sesame
• 1 dl (0.4 cup) black sesame
• 2 tbsp finely chopped chives
• 2 finely chopped spring onions
• Some frisée lettuce (option)
• Olive oil, rapeseed oil or sesame oil for frying
• 1 dl (0.4 cup) soya
• 2 tbsp oyster sauce
• ¼ dl (0.1 cup) freshly squeezed lime juice
• ¼ dl (0.1 cup) freshly squeezed lemon juice
• 1 tsp white sesame
• 1 tsp finely grated garlic
• 1 tsp finely grated ginger