01 - Combine soy sauce, sesame oil, rice vinegar, honey, grated ginger, and minced garlic in a bowl. Add cubed salmon and gently toss to coat. Cover and refrigerate for at least 10 minutes while preparing remaining components.
02 - Mix cooled cooked rice with rice vinegar, sugar, and salt in a separate bowl until well combined. Set aside at room temperature.
03 - Dice avocado, thinly slice cucumber and radishes, julienne carrot, finely slice green onions, and cut seaweed sheets into strips if using. Keep ingredients chilled until assembly.
04 - Divide seasoned rice evenly among four bowls. Arrange marinated salmon, avocado, cucumber, carrot, radishes, pickled ginger, edamame, and remaining toppings in sections over the rice base.
05 - Drizzle with spicy mayo or sriracha if desired. Sprinkle with sesame seeds and green onions. Serve immediately with lime wedges on the side for squeezing.