Watermelon tuna is an easy fish substitute that tastes like the real deal! Marinate cubed watermelon in a blend of seasonings to mimic the flavor of ahi tuna steak, then add it to poke bowls, sushi, and more.
In a bowl, add the rice wine vinegar, soy sauce, sesame oil, green onion, crushed nori sheet and the sesame seeds. Stir to combine. Add the cubed watermelon in and stir everything together to combine. Ensure that all the watermelon is marinated in/under the liquid.
Cover and allow to marinate in the fridge for at least 24 hours, preferably up to 48 hours for the best texture.
Remove from the fridge, and enjoy as desired! You can let it sit out a bit to come back closer to room temperature and serve in a poke bowl.
Notes
Any leftover watermelon tuna should be stored in an airtight container in the fridge for 3 to 4 days total (including the initial marinating time).