Tuna Tartare: Restaurant Recipe at Home

What is tartare and why is it so popular in summer?

Tartare is a preparation of raw fish or meat cut into small cubes and seasoned with a vinaigrette or sauce. Tuna tartare has become the most ordered appetizer in Spanish restaurants during the summer months for a simple reason: it's fresh, elegant, satisfying, and requires no cooking.

Unlike ceviche (where citric acid "cooks" the fish), in tartare, the tuna remains completely raw. The seasoning is added just before serving so it doesn't alter the texture. This means that the quality of the tuna is absolutely critical: no sauce or cooking can disguise mediocre tuna.

Tuna tartare has French roots (the original steak tartare was made from meat), but its popularization with fish comes from 1990s Japanese-Western fusion cuisine. Today, it's a universal classic that never goes out of style because it delivers everything a diner looks for in summer: cold, light, flavorful, and visually spectacular.

How to choose the perfect tuna for tartare

Tuna for tartare must meet three non-negotiable requirements:

Certified freshness: Ask for "tuna for raw consumption" or "sashimi grade" at your fishmonger. This means the tuna has been previously frozen at -20°C for at least 24 hours (or -35°C for 15 hours) to eliminate parasites such as anisakis. In Spain, regulations require this prior freezing for any fish to be consumed raw.

Correct cut: Bluefin tuna loin (the central part, without nerves or dark meat) is ideal. The belly (toro) is fattier and melts in the mouth, but its price is considerably higher. For a first tartare, the loin is the smart choice.

Color and texture: Fresh tuna has an intense red color, almost burgundy, without brown spots or grayish areas. To the touch, it should be firm, not soft. If the tuna has lost color or has a strong fishy odor (beyond a slight sea aroma), do not use it for tartare.

Quantity per person: For a starter, 80-100 g of tuna per person. For a main summer dish, 150-180 g. A 400 g tuna loin block comfortably yields 4 generous starters.

Cutting technique: the professional secret

The cut is what separates homemade tartare from restaurant-quality. At home, the tendency is to chop the tuna too finely or irregularly. A professional result requires uniform cubes of 8-10 mm:

1. Chill the tuna: 15 minutes in the freezer before cutting. Semi-frozen tuna is easier to cut into clean cubes without crumbling.
2. Use a sharp knife: A well-sharpened chef's knife or, ideally, a Japanese knife (yanagiba). The cut should be clean, in a single motion. Never saw the tuna.
3. Slice: First, cut the block into slices 1 cm thick.
4. Cut into sticks: Stack 2-3 slices and cut them into 1 cm sticks.
5. Dice: Rotate the sticks 90° and cut them into 1 cm cubes. Do not chop further.

Fatal error: Never chop the tuna with a knife as if it were an onion (repeatedly hitting it). This breaks the fibers, releases liquid, and the tartare becomes mushy. Each cut must be clean and decisive.

Classic recipe: tuna tartare with soy and sesame

For 4 starters:

• 400 g bluefin tuna loin (sashimi grade)
• 2 tbsp low-sodium soy sauce
• 1 tbsp toasted sesame oil
• 1 tsp grated fresh ginger
• ½ ripe avocado, diced
• 1 tbsp finely chopped chives
• 1 tsp toasted sesame seeds (white and black)
• ½ tsp wasabi (optional, to taste)
• A few drops of lime juice

Preparation: Cut the tuna into 1 cm cubes as described above. In a cold bowl, mix soy sauce, sesame oil, ginger, and wasabi. Add the tuna and gently mix with a spatula — do not use forks or over-stir. Incorporate the avocado at the end so it doesn't get crushed. Plate immediately using a plating ring (see plating section). Sprinkle with sesame seeds and chives.

Total time: 15 minutes from start to finish. Do not leave the seasoned tuna for more than 5 minutes before serving: the soy sauce begins to "cook" the surface proteins and the color changes.

Mediterranean variation with EVOO and capers

For those who prefer a less Asian and more Mediterranean flavor profile:

• 400 g diced tuna
• 3 tbsp extra virgin olive oil (the best you have)
• 1 tbsp small capers, drained and chopped
• 1 tbsp finely diced shallot
• 1 tsp Dijon mustard
• Zest of ½ lemon
• Chopped sun-dried tomatoes (4-5 units)
• Chopped fresh parsley
• Black pepper, fleur de sel

Mix the dressing in a bowl, add the tuna, plate, and serve with a slice of crystal bread rubbed with tomato. This version is more subtle than the Asian one, with olive oil and capers providing Mediterranean umami.

Tropical variation with mango and avocado

The most visually appealing version and the one that is most popular at outdoor summer dinners:

• 400 g diced tuna
• ½ ripe mango, diced to the same size as the tuna
• 1 ripe avocado, diced
• Dressing: 2 tbsp soy sauce, 1 tbsp lime juice, 1 tbsp EVOO, ½ tsp sriracha
• Fresh cilantro, black sesame seeds

Layer using a plating ring: first, gently mashed avocado, then the seasoned tuna mixed with mango, and crown with cilantro and sesame seeds. The contrast of colors (red of the tuna, orange of the mango, green of the avocado) is spectacular.

Professional plating at home

The plating ring is the secret to making your tartare look restaurant-quality. You can buy one for €3-5 at any kitchen store, or improvise with an empty bottomless tin can.

1. Place the ring in the center of the plate.
2. Fill with the tartare, pressing gently with the back of a spoon to compact without crushing.
3. Carefully lift the ring — the tartare will maintain its shape.
4. Add toppings: sesame seeds, chives, a drizzle of oil, a few drops of sauce around the plate.
5. If you want to go further, add a fried wonton crisp or a tempura crunch on top.

The ideal plate is white and plain — let the colors of the tartare be the protagonists. A plate with too much decoration competes with the food.

For more no-cook summer recipes, explore our cod ceviche, smoked salmon poke bowl, or cold seafood appetizers. In our gourmet preserves collection, you'll find premium products that complement any tartare.

Frequently asked questions