Start heating your oven to 230 °C (446 °F). Take a heatproof bowl and add 150 g cooked Japanese short-grain rice. Add 1 tsp Japanese soy sauce (koikuchi shoyu), 1 tsp aonori (dried green seaweed powder) and 1 tbsp toasted sesame oil, and mix until well combined.
Line a baking tray with parchment paper and spread the rice out in a thin even layer, leaving some space for 2 salmon fillets. Sprinkle 1 pinch salt over the salmon and rub the skin with a small amount of sesame oil, then place them skin side down next to the rice. Once hot, place in the upper part of the oven and bake for 15 minutes.
While you wait, cut 2 Japanese cucumber and 1 avocado into cubes. Remove 80 g edamame from their pods and if using, cut 2 perilla leaves (shiso) into thin strips. Place everything in a large salad bowl.
Take a jug and add the dressing ingredients (2 tbsp Japanese soy sauce (koikuchi shoyu), 1 tbsp yuzu juice, 1 tbsp rice vinegar, 1 tsp sugar, 1 tsp toasted white sesame seeds, 1 tsp ground sesame seeds, 1 tbsp sesame oil). Whisk until combined.
After 15 minutes, remove the tray from the oven and remove the skin from the salmon fillets. Break the salmon flesh into flakes and cut the skin into bitesize pieces.
Add the salmon to the bowl and sprinkle the crispy rice and salmon skin on top.
Drizzle with the dressing, mix well before eating and enjoy!