Pairing Tuna with Red Wine: Myth or Technical Foundation?
Pairing Tuna with Red Wine: Myth or Technical Foundation?
I once heard a fellow sommelier justify why the protagonist of this pairing article works so well with certain red wines by saying: “Tuna is the cow that swims in the sea.” Amusing — but one thing is certain: this magnificent warm-blooded, endothermic fish, an exceptional swimmer and predator, offers flesh of remarkably meaty texture, pardon the necessary redundancy.
The wines most frequently cited by sommeliers worldwide to accompany a succulent grilled tuna steak are New World Pinot Noirs, with generous fruit and velvety tannins, or Chardonnays equally rich in ripe fruit yet without oak influence. Other wines regularly mentioned by wine professionals include the vibrant, delicious reds of Beaujolais or the Loire Valley, as well as young, fruit-forward and supple Merlots from various regions.
But does tuna always work with red wine? And what characteristics make this fish so singular when it comes to wine pairing? The “tuna with red” experience is widely accepted, yet the foundations of this interaction are rarely discussed.
Do Red Wines Always Work with Tuna?
Iodine, Tannins and Metallic Reactions
As we discussed in last month’s article on sea urchins, sommeliers largely agree that tannins — present in grams per litre in reds, compared to mere milligrams in whites — do not interact well with the iodine found in fish, seafood and seaweed. Wines can develop metallic notes: fruit fades and an unpleasant steel- or iron-like aftertaste emerges, particularly on the finish.
Seafood treasures such as cod, mackerel, haddock, lobster, langoustine, shrimp, goose barnacles and sea urchin contain far higher concentrations of iodine than tuna — sometimes two to five times more. From this perspective, red wines would indeed appear eligible partners at the table.
Iron, Omega-3 and Lipid Oxidation
However, we must also consider the complex interaction between iron present in certain wines — particularly reds, fermented in contact with stems, skins and seeds, often from iron-rich soils — and the polyunsaturated fats found in fish.
Excellent for health, omega-3 fatty acids can be disastrous in wine pairing when they encounter iron in the glass. Chemically speaking, Fe²⁺ ions may catalyse lipid oxidation by breaking down lipid hydroperoxides present in tuna flesh. In practical terms, wines containing iron levels above 5 mg/L — far more common in red wines — can develop that unpleasant stale fish aftertaste.
Thus, while tuna’s relatively low iodine content may invite red wine pairing, its high concentration of polyunsaturated fats imposes restrictions on wines with elevated iron levels.
Certain species within the genus Thunnus can contain nearly 30% fat, with around 20% of that fat being polyunsaturated. This is the case with noble bluefin tuna from the Algarve coast. Meanwhile, relatives such as skipjack tuna (Katsuwonus pelamis), caught in spring, may contain less than 1% polyunsaturated fat.
Generally speaking, among the eight true Thunnus species, we can expect fatty flesh capable of developing unpleasant rancid notes if paired with wines high in iron.
For this reason, highly extracted, very tannic reds should be avoided — as well as wines (red, white or rosé) originating from strongly ferruginous soils.
Umami and Wine
Another essential aspect to consider is the interaction between tuna’s pronounced umami character — especially in cooked or cured preparations — and the gustatory and tactile elements of wine.
What Is Umami and How Was It Discovered?
The fifth basic taste, umami — alongside sweet, salty, sour and bitter — was identified in 1908 by Japanese chemist Kikunae Ikeda, who isolated glutamic acid from kombu seaweed dashi. On its own, glutamic acid tastes sour, but when dissolved in water and neutralised with sodium hydroxide, Ikeda discovered monosodium glutamate, a powerful flavour enhancer.
In 1913, one of Ikeda’s students isolated disodium inosinate from dried bonito dashi — a relative of tuna — identifying another potent contributor to umami, especially when combined with glutamate and disodium guanylate, later extracted from dried shiitake mushrooms.
Glutamate occurs naturally in tomatoes, garlic, scallops, sea urchins, shrimp, seaweed, anchovies, aged cheeses (Parmigiano Reggiano is an umami bomb), soy sauce and cured hams. Inosinate is abundant in dried bonito, sardines and tuna. Guanylate is especially concentrated in dried mushrooms such as shiitake, morels and porcini.
Together, this trio — glutamate, inosinate and guanylate — acts synergistically, amplifying flavour in everything around it: grated Parmesan on pasta or a tin of tuna in salad — and the magic happens.
Humans are instinctively drawn to umami — unsurprisingly, the Japanese word roughly translates as “deliciousness.” Evolution taught us that umami signals the presence of protein, as proteins are chains of amino acids. Cooking, curing or fermentation typically release these amino acids, enhancing savouriness.
Raw tuna or bonito in sashimi often tastes less savoury than grilled, canned or cured tuna, such as the traditional Algarve muxama.
Despite its scientific recognition decades ago, Western sommelier schools have only partially incorporated umami into pairing methodology. Even in the East, discussions of umami pairing often revolve around sake rather than wine.
The Impact of Umami on Wine Perception
Possibly the only institution that formally addresses wine pairing with umami-rich foods is the Wine & Spirit Education Trust (WSET). According to WSET, umami enhances bitterness, astringency and dryness in wine, while muting fruit and perceived sweetness. It amplifies hardness and reduces softness.
The logical conclusion: choose fruit-driven wines with generous alcohol and softness, and moderate tannin and acidity, when pairing with umami-rich dishes such as cooked or cured tuna.
Tannin or Alcohol: How to Restore Balance
Beyond the WSET framework, I believe umami quite literally increases salivation. To counterbalance this succulence, sommeliers traditionally rely on tannin or alcohol.
However, since tannins and bitter compounds are amplified by umami, alcohol becomes the more intelligent structural element for drying the palate after the glutamate-inosinate-guanylate trio has stimulated salivation.
In conclusion, tuna — especially when cooked or cured — benefits from soft, fruit-driven wines with healthy alcohol levels. Wines tilted toward austerity and hardness should be avoided, except when pairing with raw tuna, where umami compounds have not yet been fully liberated.
Tests
I spent the last month eating tuna almost daily. Occupational hazard.
I tested a large number of wines across various preparations, focusing particularly on grilled tuna steak and its interaction with red wines.
Results with Red Wines
Practice confirmed theory. Fruit-forward reds, balanced toward softness, with light, ripe and velvety tannins, performed beautifully.
Even better were wines from granitic soils — Beaujolais in general, a Cinsault from Itata (Chile), entry-level Dão wines — as well as wines from limestone or clay-limestone soils such as Castelão from Lisbon, village-level Burgundy or Valpolicella. Alluvial soil wines like New Zealand Pinot Noir and even a modest Californian Merlot also showed well.
Wines from schistous soils — often more structured and prone to higher iron content — were markedly less successful.
Among whites, some lacked the structure for the “meaty” tuna steak, or the umami exaggerated their acidity and savouriness.
Rosés: The Ideal Middle Ground
Rosé wines — bridging the freshness of whites and the structure of reds — paired remarkably well with grilled tuna. The more gastronomic styles, balanced toward fruit, body and softness rather than crispness, worked best: Tavel, Bandol, Spanish rosados, claretes and structured Alentejo rosés.
A classic pairing comes to mind: salade niçoise with tuna, perfectly escorted by a serious Bandol rosé.
Whites, Sparkling and Raw Tuna
Finally, white wine can be extraordinary with tuna — particularly raw tuna, whose marbled fat and marine richness conceal umami not yet fully released.
Few pleasures surpass toro or chutoro sashimi paired with a mineral Mosel Riesling or a vibrant Arinto from the Azores. Tuna ceviche with avocado, coriander, lime and chilli sings alongside high-altitude Torrontés from Argentina or a fuller-bodied Sauvignon Blanc from Chile’s Casablanca Valley.
Champagnes and other high-quality sparkling wines aged extensively on lees, especially from limestone soils, can also enhance raw tuna’s umami — much like shoyu and wasabi do.
With the risk of elevating the experience to sheer gastronomic joy.
Guilherme Corrêa
