Add a teaspoon of spicy mayo or kewpie into each cube.
Next, press down the rice mixture, packing it tightly into each cube.
Top with 16 small nori rectangles, one on each section.
Invert the tray, removing the plastic on top. Enjoy with soy sauce and your favorite garnishes.
Notes
Spicy Sushi: If you like a bit of heat and texture throughout, try mixing a small spoonful of chili crisp or crispy garlic directly into the rice before pressing it into the tray.
Fish Varieties: Use sushi-grade salmon, tuna, or a combo of both. Because the cubes are small, slicing the fish extra thin makes layering easier and gives you a better bite every time.
Fruit Swap: Swapping the cucumber for very thin slices of mango gives these cubes a sweet-savory contrast that pairs especially well with salmon.
Toasty Rice: For a nuttier base flavor, stirring a few drops of toasted sesame oil into the rice adds depth without overpowering the other layers.
Cream Cheese Roll: Add a thin layer of cream cheese between the avocado and cucumber for that classic, creamy sushi vibe.
Seafood Safety: For food safety, always use seafood labeled safe for raw consumption and follow proper refrigeration guidelines.