10-Minute Sesame Tuna Tartare

This 10-minute sesame tuna tartare is the appetizer that feels restaurant-fancy but comes together with nothing more than a sharp knife and a bowl. It is bright, savory, and just rich enough from ripe avocado and a touch of toasted sesame oil.

You will spoon it over crisp wonton chips or cool cucumber rounds and serve it cold, right away. No cooking, no fuss, just a really good start to a meal.

Why This Tuna Tartare Works

The combination of cool, velvety tuna and buttery avocado hits all the right notes, especially with a salty soy and ginger kick. It is light but satisfying, and it looks impressive with almost zero effort.

I keep coming back to this version because the dressing is simple and does not overpower the fish. The key is using the best tuna you can find and keeping everything well chilled.

Ingredients

• 8 oz sashimi-grade tuna: cut into small, even dice
• 1 ripe avocado: diced
• 2 tbsp low-sodium soy sauce: for savory depth without drowning the fish
• 1 tsp toasted sesame oil: its nuttiness is key
• 1 tbsp fresh lime juice: brightens everything up
• 1 tsp grated fresh ginger: gives a little warmth
• 2 green onions: thinly sliced, white and green parts
• 1 tsp sesame seeds: for a subtle crunch, optional
• Wonton chips or cucumber rounds: for serving

Variations / Substitutions

• Swap the tuna for sushi-grade salmon: salmon’s richer flavor works just as well with the sesame dressing.
• Use diced mango instead of avocado: it adds sweetness and a juicy pop that plays nicely against the savory notes.
• Make it gluten-free: replace the soy sauce with tamari or coconut aminos.
• Add a little heat: stir a small squirt of sriracha into the dressing.
• Change the acid: rice vinegar can step in for lime juice in a pinch.

If you want a cooked appetizer with a similar vibe, try our Spicy Shrimp Lettuce Wraps.

How to Make Sesame Tuna Tartare

Step 1: Dice the Tuna and Avocado

Cut the 8 oz tuna and 1 avocado into neat 1/4-inch cubes. Keep the tuna in the fridge until you are ready to work, and move quickly so the fish stays cold. The tuna should look bright red and firm, with no off odor.

Step 2: Whisk the Sesame Dressing

In a small bowl, whisk 2 tbsp soy sauce, 1 tsp sesame oil, 1 tbsp lime juice, and 1 tsp grated ginger. Taste it once it comes together and add a tiny pinch more lime or soy if the balance feels off to you.

Step 3: Spoon and Top the Tartare

Toss the diced tuna gently with the dressing until evenly coated. Spoon the tuna over your wonton chips or cucumber rounds, then scatter the avocado, 2 sliced green onions, and 1 tsp sesame seeds right on top. Serve right away while everything is cold and the chips are crisp.

Tips for Chilled Tuna Tartare

• Start with sashimi-grade tuna.: Ask your fishmonger straight up if it is safe to eat raw. That one decision makes the whole dish.
• Chill your serving plates.: Pop them in the fridge or freezer for a few minutes before plating so the tartare stays cool longer.
• Fold the avocado in at the very last moment.: If it sits too long in the dressing, it can turn mushy or brown.
• If you skip the chips, thin cucumber slices keep things extra light: and give a nice crunch without frying.

Scale it up for a crowd:

Storing Leftovers

• Refrigerate: the dressed tuna without the avocado for up to 24 hours. Keep it in a sealed container pressed tightly with plastic wrap right against the surface so it stays bright. Add fresh avocado when you are ready to serve again.
• Serve it cold: straight from the fridge. It is meant to be eaten chilled.

What to Serve After This Tuna Tartare

A bowl of miso soup and a simple cucumber salad keep the meal light and Japanese-inspired. For something more substantial, a platter of miso-glazed salmon with steamed rice plays off the same sesame-ginger notes while adding warmth and heft.

Frequently Asked Questions

Can I use frozen tuna for tartare?

Yes, if it was commercially frozen to -4°F for at least 7 days, which is the standard for parasite destruction. Or simply buy fish labeled sashimi-grade.

Is it safe to eat raw tuna?

Sashimi-grade tuna from a reliable source is handled specifically to be eaten raw. Always buy it from a fishmonger you trust and keep it cold right up until you are ready to use it.

What if I cannot find sashimi-grade tuna?

You can sub in good-quality smoked salmon or thinly sliced cured salmon. The texture will be different, but the salty, smoky flavor works beautifully with the same dressing.

Can I make this vegan?

You cannot make tuna tartare vegan, but a diced tomato and cucumber tartare with the same sesame dressing comes surprisingly close.

Sesame Tuna Tartare Recipe

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Prep Time 10 minutes mins

Total Time 10 minutes mins

Servings: 4 servings

Calories: 140

Ingredients Method Notes

Ingredients

  

• 8 oz sashimi-grade tuna
• 1 ripe avocado
• 2 tbsp low-sodium soy sauce
• 1 tsp toasted sesame oil
• 1 tbsp fresh lime juice
• 1 tsp grated fresh ginger
• 2 green onions
• 1 tsp sesame seeds
• Wonton chips or cucumber rounds

Method

 

1. Dice the tuna and avocado into 1/4-inch cubes, keeping the tuna cold.
2. In a small bowl, whisk the soy sauce, sesame oil, lime juice, and grated ginger.
3. Toss the tuna with the dressing, spoon it over chips or cucumber, then top with avocado, green onion, and sesame seeds. Serve immediately.

Notes

If you have time, chill the dressed tuna for 15 minutes before spooning it out so the flavors meld. Add the avocado only at the last second so it stays firm and bright.