Cube ahi tuna into bite size pieces.
In a bowl, add in Noble Made Coconut Aminos, sesame oil, and rice wine vinegar. Stir until well combined.
Add the ahi tuna and green onions into the bowl. Gently combine making sure the ahi tuna is coated with the marinade. Marinate for 15 minutes.
In another bowl, combine the cooked cauliflower rice with the mayonnaise. Set aside.
Thinly slice the cucumber, dice or thinly slice the avocado, and cut the nori sheet into confetti size pieces.
Mix the nori sheet with the black sesame seeds.
Create the stacks: using a 1 cup measuring cup, add a few sprinkles of the mixed black sesame seeds and nori sheet, then add a couple spoonfuls of the ahi tuna, add a few slices of cucumber making sure it’s covering the tuna, then add the avocado, and finally fill the rest of the cup with the cauliflower rice.
Flip the measuring cup on the serving dish and drizzle a bit of the marinade on top of the stacks.