01 - Rinse rice under cold water until water runs clear. Combine with water and a pinch of salt in a small saucepan. Bring to a boil over medium heat, cover, reduce heat, and let simmer for 12 to 15 minutes until water is absorbed. Fluff with a fork and keep warm.
02 - Pat salmon fillets dry with paper towels. In a mixing bowl, blend soy sauce, sesame oil, salt, and black pepper. Brush marinade evenly over fillets. Lightly dust the skin side with cornstarch.
03 - Heat a nonstick skillet over medium-high heat. Place salmon fillets skin-side down and press gently to ensure even contact. Cook 4 to 5 minutes to render the skin crispy, then flip and cook another 2 to 3 minutes until just opaque. Remove and set aside.
04 - Slice cucumber, julienne carrots, slice avocado, finely slice scallions, steam edamame, and cut nori into thin strips if using. Set all toppings aside for assembly.
05 - In a small bowl, whisk together soy sauce, rice vinegar, honey or maple syrup, sriracha if desired, and grated ginger until smooth.
06 - Divide cooked rice among four serving bowls. Top with cucumber, carrot, edamame, and avocado. Place a crispy salmon fillet on each bowl, drizzle with sauce, and garnish with scallions, toasted sesame seeds, and nori strips.