Marinate the salmon fillets in 1/2 cup of teriyaki sauce for at least 15 minutes.
Preheat the grill to medium-high heat.
Grill the marinated salmon for about 4-5 minutes on each side, or until it’s cooked through and flakes easily with a fork.
Mix the cooked rice with 1 tablespoon of rice vinegar (if using) and 1 teaspoon of salt in a mixing bowl.
Stir until combined, giving your rice a subtle tangy flavor.
Mash the ripe avocados in a bowl with 1 tablespoon of freshly squeezed lime juice and 1/4 teaspoon of salt until creamy.
Layer using a ring mold, starting with a generous scoop of rice at the bottom, followed by a smooth layer of avocado, and then top it off with grilled salmon.
Repeat the layers until all ingredients are used, finishing with salmon on top.
Garnish your creation with 2 tablespoons of toasted sesame seeds and sliced green onions for an extra pop of texture and freshness before serving.