Gorgeous Ahi Tuna Tacos that are perfectly seared with sesame seeds and served with a citrus mango guacamole!
You’ll want to eat these tacos with fresh cilantro, a squeeze of lime, and our homemade mango guac recipe.
Oh hello, there beautiful ahi tacos. We are huge fans of tacos. We love beef tacos, vegan tacos, fish tacos, and chicken tacos. Pop any kind of meat or veggies into a taco shell and I’ll happily eat it!
Perfectly Seared Ahi
Every ahi tuna taco begins with perfectly seared ahi tuna. Lucky for you, we have an entire post on how to make seared ahi tuna on FFF. This is actually the exact recipe we used for the ahi in these tacos.
A few tips
Let it marinate: the longer you let your ahi marinate in the ginger soy sauce, the better! We recommend at least 30 minutes, but 2 hours is gold!
Hot Heat + Oil: the goal with cooking ahi tuna is to NOT overcook. We prefer it rare to medium-rare so that it’s pink in the middle. Make sure to heat at least 2 tablespoons of olive oil over medium/high heat so you can get a quick hot sear on the outside.
Doneness Sear Scale
- Rare: 30 seconds per side
- Medium rare: 1 minute per side
- Well done: 2 minutes per side
Toppings
Mango Guac: Whatever you do….do not NOT make the mango guac. I know that is a double negative, but what I’m trying to say is you better make the mango guacamole! It really does add the perfect amount of sweet + savory and healthy fats too!
Other: In addition to the mango guac, we used a few key fresh ingredients to seal the deal. Here’s what you need:
- fresh cilantro
- red onion
- lime juice
All About the Tortilla
When it comes to tacos, the tortilla matters. Like, we are kind of tortilla snobs and I’m not mad about it. There are so many tortillas on the market such as corn, wheat, and even grain-free!
But, let me share with you our favorite, game-changing tortillas — Mission Street Taco Flour Tortillas. They are the perfect size for tacos and their texture is firm yet chewy. If you’re not a flour tortilla kind of girl, they also make a corn tortilla in the same “street taco” size.
Before serving: We suggest browning your tortillas just a bit. You can pan fry them, but what we like to do is turn our gas burner on and cook them over the flame to get them warm and a little bit crunchy.
Our Fav Taco Recipes

Ahi Tuna Tacos
Ingredients
Mango Guacamole
- 4 medium avocados ripe
- 2 tablespoons fresh cilantro diced
- 2 tablespoons fresh lime juice divided
- 1/2 teaspoon salt or more, to taste
- 1 cup fresh mango cubed
Seared Ahi Tuna
- 1.5 lbs. ahi tuna steaks 2 1.5-inch steaks
- 1/3 cup soy sauce
- 1 teaspoon red chili sauce
- 1 teaspoon fresh grated ginger
- 4 tablespoons sesame seeds
- 4 tablespoons olive oil
Other
- 1/4 cup chopped cilantro
- 1/4 cup minced red onion
- 8-12 street taco flour tortillas
Instructions
- First, prepare the mango guacamole by following our recipe and set aside.
- Next, prepare the tuna steaks by following our recipe for ahi tuna steaks.
- When ahi tuna steak is cooked, carefully cut the ahi tuna into thin strips.
- Prepare the tacos by equally distributing tuna, cilantro, and red onion into tortillas. Then, top with 1-2 tablespoons of mango guacamole.
Tips & Notes
- This recipe was updated on February 25, 2020.
- Nutrition does not include mango guacamole.
Added some brown rice… 10/10
I should add that I tried this recipe because I bought a bunch of frozen ahi tuna by mistake (thinking I was getting salmon) and had to figure out what to do with them! I think I might be buying them again on purpose, lol!
Super yum and feels so healthy! The only thing I’d note is I cooked mine for 1 min each side for medium rare and it was way way well done. Would do 30 seconds each side next time!
Do you think I could substitute peaches for mango?
I don’t see why not! That would be delish!
I really like how Keto -Friendly the recipe is. Food that tastes good and is good for you. Thanks for sharing!
This was absolutely amazing! We are on a Hawaii staycation due to covid-19 and this madness feel instantly transported to the islands!
I could really use a Hawaiian vacay right now!
YUMO!!!
Do you happen to know the caloric value of the three tacos?? I just made these and loved them by the way! I will be using this recipe again very soon
Looks amazing! And great photos 🙂
Thank you Lexi!
Hi Lee
Now I want to try some receipes. But I have a little problem.
How many gramms / milliliters are a cup?
In the internet I found, that a U.S cup measures 1 cup = 240 milliliters.
In Europe, we don’t have these measures. Maybe you can help me, so I can transform your receipes 🙂
Greetings
Jocey
Hey Jocey! If you go to google and type 1 cup to liters…it will do the math for you. It does that for all conversions! Good luck 🙂
Wow, these do look like heaven on your palate! I wish tuna (fresh) was cheaper…
All the same, I think these need to happen!
I get mine from Trader Joes! I should have stated that in my post, but I actually buy it frozen. Check it out!
THESE LOOK BOMB DIGITY GOOD!
Oh it all looks delicious! The color is divine, it would be a good dish for parties!