Super Quick Sushi

• 125 g heat and serve (cooked) brown rice
• 1 tbsp sushi seasoning
• 1 yaki nori (roasted seaweed for sushi)
• 95 g tin tuna, in oil
• 0.25 avocado, sliced into thin strips
• 0.5 cucumber, sliced into thin strips
• 1 tsp sriracha mayonnaise
• 1 tbsp soy sauce, to serve