Step 1: Prepare the Rice : Rinse the rice in cold water until the water runs clear. Cook according to package directions or using a rice cooker. Once done, let it cool slightly. (You can season it with a teaspoon of rice vinegar for extra flavor.)
Step 2: Marinate the Tuna : In a bowl, whisk together soy sauce, sesame oil, rice vinegar, honey, ginger, and sriracha. Add the diced tuna and toss gently to coat. Cover and refrigerate for 10–15 minutes to let the flavors meld.
Step 3: Prepare the Toppings : Dice the avocado, slice the cucumber, and shred the carrot. Cook and cool edamame beans. Cut the nori sheet into fine strips using scissors.
Step 4: Assemble the Bowl : Divide the rice evenly between two bowls. Spoon the marinated tuna on top. Arrange the toppings around the bowl: avocado, cucumber, edamame, carrots, and onions. Drizzle any leftover marinade over the top. Garnish with sesame seeds, green onions, and nori strips.
Step 5: Serve : (Optional) Drizzle with spicy mayo or extra soy sauce before serving. Serve immediately for the freshest flavor and texture.