Cook the rice: Rinse 1.5 cups dry short-grain rice until the water runs mostly clear. Cook according to package directions.
Fluff and let it cool slightly. Warm rice is fine; just avoid piping hot.
Make the marinade: In a bowl, whisk soy sauce, sesame oil, rice vinegar, honey, ginger, garlic, and sriracha (if using). Taste and adjust.
You want savory first, then tang, a touch of sweet, and a gentle kick.
Prep the tuna: Pat the sushi-grade tuna dry with paper towels. Cut into 1/2-inch cubes. Keep it cold until you’re ready to marinate.
Marinate briefly: Toss the tuna with the marinade, green onions, sesame seeds, and a teaspoon of neutral oil if you want extra shine.
Marinate in the fridge for 10–15 minutes. Do not exceed 30 minutes or the texture can go mushy.
Prep toppings: Dice avocado and cucumber. Warm or thaw edamame. Slice any extra herbs or greens you like.
Keep everything bite-sized for easy eating.
Assemble bowls: Add a scoop of rice to each bowl. Spoon marinated tuna over the top. Add avocado, cucumber, edamame, and seaweed salad or nori strips.
Sprinkle with more sesame seeds or furikake.
Finish and serve: Squeeze lime over the bowl. Add a drizzle of extra soy or a touch of sriracha if you like more punch. Serve immediately while the tuna is cool and the rice is just warm.