Learn the secret to making perfectly Seared Tuna with a Sesame Seed Crust in just 10 minutes flat. A healthy, delicious ahi tuna recipe that is full of flavor and easy to make.
This Seared Tuna happened a lot in our catering days, so much so, I couldn’t bring myself to make it again for a long long time. But a good three years have passed now, and the other day I got a hankering for it, so I thought I’d share! It’s one of those recipes that may seem fancy, but honestly, it couldn’t be any simpler and the best part, it is, it is ridiculously fast!
Best tuna to use?
Whenever you serve Ahi Tuna rare, make sure to use “sushi-grade” tuna. My favorite? Look for Saku Tuna.
What is Saku Tuna:
Ahi tuna or yellowfin tuna, also known as saku tuna, is commonly used to make sushi. Suku means “block” and it is typically a block of boneless, skinless, frozen, vacuum-packed yellowfin tuna.
Flash freezing the tuna kills any harmful bacteria, making it very safe to eat. Yes, of course, you can also use fresh ahi tuna, if you trust your source, or live close to where it is caught. We used Saku Tuna in our catering business and never had a problem.
Where to get Saku Tuna?
- If your grocery store makes sushi in-house, then they very likely have Saku tuna- just ask if you can buy a block. Locally I purchase it at Huckleberries from the Sushi Department.
- Purchase from a Sushi Restaurant. More than not they are happy to sell a block of frozen Saku Tuna.
- Order online. This company offers frozen Saku Tuna Block.
How to Sear Tuna:
Step Two: Make the sesame spice crust.
The Sesame Crust is a blend of sesame seeds, granulated garlic or onion powder, dried herbs (thyme or Italian seasoning), salt, pepper and sugar. Sugar helps get the crust nice and golden, in a shorter amount of time which is imperative here, to prevent overcooking the fish.
Step Three: Coat the Ahi Tuna in the sesame seed spice, pressing it into the flesh and coating all sides generously. The soy sauce helps it stick.
Step Four: Heat up a skillet over medium-high heat. This is KEY. You want the skillet very very HOT 🔥. Turn your fan on, and have a spatter guard handy, or use a lid to partially cover. When the skillet is HOT, add a high heat oil-both avocado oil and peanut oil works well here. Peanut oil adds great flavor.
Step Five: Carefully place the ahi in the pan- don’t throw it in, it will splatter, carefully lay it in the oil. Press it down into the skillet with a metal spatula and sear for about 60-90 seconds. If the seeds are popping use a splatter guard. Lift one side and check to see that the crust is golden- if not, your pan is not hot enough, so turn the heat up. 🔥
The goal here is to get a nice golden crust on all sides without cooking the ahi tuna all the way through. HOT PAN is key.
Basically, the pan needs to be hot enough to get the crust golden in 60-90 seconds, otherwise you’ll likely overcook the inside of the fish. Carefully turn it over, press down, sear for 60-90 seconds. Then sear the two long edges, using a pair of tongs to hold it up.
Step Six: Place the seared ahi on a cutting board, and slice thinly using a very sharp knife. The edges will be crispy and the inside, rare. At this point, you could even refigerate the ahi block whole, and serve later cold. Seared Tuna is good hot or cold.
And there you have it- a fast, flavorful protein that takes about 10 minutes time.
The flavorful sesame crust gives the Seared Tuna just enough flavor, without overpowering it.
3 Expert tips for the BEST Seared Tuna:
- Use sushi grade, Saku Tuna Block for nice uniform slices.
- Add a little sugar to the spice mix, which will carmelize in the pan and give a golden crust, in a shorter amount of time.
- Use a cast-iron skillet, and make sure it is HOT HOT HOT 🔥.
What to serve with Seared Tuna:
- Asian Cucumber Salad
- Seasoned Japanese Rice with Furikake
- Easy Crunchy Asian Slaw
- Farmers Market Fried Rice
- Miso Mushroom Bowl
- Kyoto Style Sweet Potatoes with Miso, Ginger and Scallions
- Zen Noodle Bowl
- Mashed Sweet Potatoes with Ginger
- Roasted Butternut with Black Garlic & Miso
- Use it in this Spicy Miso Portobello Mushroom Burger instead of the mushroom
- Over a Spinach Salad with this Miso Mushroom Dressing.
Hope you give this Seared Ahi Tuna a try- it’s healthy and light and full of flavor! Happy weekend.
Seared Tuna with Sesame Crust. Learn how to make the best Sesame Ahi Tuna- crispy golden on the outside and rare on the inside in just 10 minutes flat!
- 10– 16 ounces ahi tuna, thawed (sushi-grade) see notes
- 1 tablespoon soy sauce or GF liquid aminos
- 2 tablespoons high heat oil for searing- peanut oil, wok oil, avocado
- 3 tablespoons sesame seeds (black, or both black and white)
- 1 teaspoon granulated garlic powder (or onion powder)
- 1 teaspoon kosher salt
- 1 teaspoon fresh cracked pepper
- 1 teaspoon sugar
- 1 teaspoon dried Italian seasoning (or dried thyme)
- Mix the Sesame Crust ingredients together in a small bowl.
- Pat dry the ahi tuna with paper towels.
- Place ahi tuna on a plate, coat all sides with soy sauce. This will help the sesame spice adhere to the tuna.
- Generously sprinkle all sides of the ahi tuna with the sesame mix, pressing it down into the flesh. Coat the sides. Read through the rest of the directions before starting because the next part goes very quickly.
- The goal here is to get a nice golden sear on all sides without cooking the ahi tuna all the way through. HOT PAN is key.
- Heat a cast-iron skillet over medium-high heat, until very very hot. Place tongs, metal spatula and splatter guard (or lid) near the stove. When the pan is hot a flick of water should sizzle loudly. Once the skillet is hot, turn the fan on high. Add the oil and coat the pan and let it get hot. Carefully lay the tuna in the pan, pressing it down into the skillet with a metal spatula. Sear 60-90 seconds- checking the underneath by lifting one corner to see if it is golden. If golden, carefully flip. If not golden, turn the heat up. Sear the other side, 60-90 seconds until golden. Sear the long edges using tongs to hold it upright.
- Place on a cutting board, blot if you like, then using a very sharp knife, thinly slice, and serve.
- At this point, you could also refrigerate up to 3 days, and serve this later, chilled. Either way is good.
Make sure to “sushi-grade” ahi tuna, or if using fresh, make sure it is a trusted source. Google Saku Tuna for online resources. Read post body for where to find this locally- sushi restaurants, grocery stores with house-made Sushi will often sell frozen Saku Tuna or Saku block if you ask.
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