Cut raw tuna steaks into approx. 20, 1-inch cubes as evenly as possible. In a bowl, toss the tuna cubes with salt, pepper, garlic powder, and sesame seeds until all the seasonings coat the tuna.
Step 2
Heat the olive oil in a pan over medium-high heat. Wait for the oil to be hot before placing the tuna cubes one by one in the oil. Cook the tuna cubes on one side for 2-3 minutes (until the sesame seeds are fried golden) before flipping the cubes over. Reduce the heat to a low to cook an additional 2-3 minutes.
Step 3
Set the ahi tuna cubes aside to cool. Whisk together the remaining ingredients to make the ginger mayo dipping sauce. You may wish to serve the sauce warm by microwaving it for just 10 seconds.
Step 4
Serve each tuna bite with a toothpick and approx. 1 TB of sauce per serving.