Adam Liaw's tuna, nori and avocado poke bowl recipe

Ingredients

• 500g tuna steaks, cut into 2cm cubes
• 6 thin spring onions, very finely sliced
• 2 cloves garlic, minced
• 1 tsp toasted black sesame seeds
• 1 tsp toasted golden sesame seeds
• 6 macadamia nuts, toasted and finely chopped
• 1 tbsp soy sauce
• 1 tbsp sesame oil
• ¼ tsp sea salt
• 1 sheet nori (see tip)
• 2 avocados, sliced