The mechanism
Why wine makes fish taste fishy
Tamura et al. (2009) identified the primary culprit: ferrous iron (Fe²⁺) in wine. When Fe²⁺ comes into contact with the unsaturated fatty acids in seafood, it catalyzes their oxidation, generating aldehydes — the compounds responsible for the unpleasant fishy aftertaste many people experience when drinking wine with fish.
Iron enters wine through soil, winemaking equipment, and cellar environments. It exists in two forms: Fe²⁺ (ferrous, reduced) and Fe³⁺ (ferric, oxidized). It is Fe²⁺ specifically that drives lipid oxidation. As Danilewicz (2018) showed, the Fe²⁺ to Fe³⁺ ratio is strongly influenced by the wine's redox status — young, reductive wines carry more Fe²⁺; aged, oxidatively developed wines convert it progressively to Fe³⁺.
The short version: High Fe²⁺ = fishy aftertaste. Low Fe²⁺ = cleaner pairing. Wine-making choices and aging directly determine how much Fe²⁺ a wine carries.
Winemaking factors
What determines Fe²⁺ levels
Not all wines carry the same iron load. The vessel, the lees contact, and the age of the wine all affect how much Fe²⁺ ends up in the glass.
| Factor | Effect on Fe²⁺ |
|---|---|
| Concrete tanks | Higher iron content — concrete leaches minerals into the wine |
| Stainless steel | Lower iron — inert surface, no leaching |
| Sur lie aging | Lower Fe²⁺ — yeast lees adsorb iron, reducing its catalytic availability |
| Young, reductive wines | Higher Fe²⁺ ratio — reduction keeps iron in its ferrous form |
| Aged, oxidative wines | Lower Fe²⁺ — oxidation converts Fe²⁺ to Fe³⁺ over time |
| Decanting / aeration | Reduces Fe²⁺ — exposure to air accelerates oxidation of ferrous to ferric iron |
Gil i Cortiella et al. (2021) found that vessel choice during white wine production significantly affects the iron speciation in the finished wine — a principle that extends across all wine types.
The case for red wine
Red wine and fish — it works
The conventional wisdom — white wine with fish, red wine with meat — contains real chemistry. High-tannin, extracted reds cause problems because their iron load is higher, their reductive character stronger, and their tannins interact unpleasantly with fish proteins. But this is not a rule about red wine itself; it is a description of what goes wrong with a specific style of red wine.
What works well is wine with vibrant acidity that cuts through the fat of the fish, without excess oak or forward fruit that would compete with delicate fish aroma. Restrained, cool-climate reds — Pinot Noir being my personal preference — carry less Fe²⁺, let the fish speak, and the acidity creates a clean, lively interplay with fat. But it is not only Pinot Noir: Six Cloves' Zinfandel, for instance, is a genuinely good companion to Bluefin — enough structure to meet the umami, enough freshness to avoid the iron problem.
Practical tip: Decant any red wine before serving with fish — even 20 minutes of air contact accelerates the conversion of Fe²⁺ to Fe³⁺, meaningfully reducing the risk of fishy aftertaste.
Preparation
How you prepare the fish matters too
Wine choice alone doesn't solve the problem. Several preparation approaches chelate Fe²⁺ directly at the fish surface — binding it before it can catalyze oxidation — or create physical barriers that limit the reaction.
Chelation
Shoyu (soy sauce)
Rich in melanoidins and flavonoids that chelate Fe²⁺ and inhibit lipid oxidation. The classic pairing of soy with sashimi has chemical as well as culinary logic.
Chelation + pH
Citrus (lemon, sudachi, yuzu)
Citric acid forms stable chelate complexes with Fe²⁺ and lowers the local pH — both slow Fe²⁺-mediated oxidation of unsaturated fatty acids.
Barrier + chelation
Olive oil
Polyphenols — particularly hydroxytyrosol and oleuropein — chelate Fe²⁺. The oil also forms a physical barrier around the fish, limiting oxygen exposure and further reducing lipid oxidation.
Maillard reaction
Torching (Aburi)
The Maillard reaction produces melanoidins at the fish surface, which chelate Fe²⁺ and reduce its catalytic activity. Evaporating surface moisture further limits lipid exposure to oxidation.
The combination of restrained wine and thoughtful preparation is not overcautious — it is why a glass of Pinot Noir alongside Aburi Otoro with a drop of sudachi can work beautifully when the same pairing with a different wine and no preparation would not.
Our winemakers
The wines we pour at Sashimi DC
Every wine at Sashimi DC has been chosen with fish in mind — acidity, restraint, and winemaking approach first. The six producers below share a philosophy of minimal intervention and transparency. A note on the vineyard connection: Perkins Harter grow the fruit; Violin Wine (currently) and Shiba Wichern Cellars (from the 2025 vintage) make wines from their Bracken Vineyard grapes.
Oregon — McMinnville
Goodfellow Family Cellars
Serious, age-worthy Pinot Noir and Chardonnay alongside an interesting field blend and a Riesling for more casual occasions. Their sparkling program — Blanc de Gris, Blanc de Noir, Blanc de Blancs — pairs brilliantly with Uni and Hotate. Wines built to last and to pair.
Oregon — Eola-Amity Hills
Perkins Harter
Growers as well — they farm the fruit that Violin Wine and Shiba Wichern Cellars vinify. Their own wines carry a genuine, direct expression of the vineyard: Pinot Noir and Chardonnay with a straightforwardness that tells you exactly where the grapes came from. No elaboration needed.
Oregon — Eola-Amity Hills
Violin Wine
Founded by Will Hamilton. Barrel-fermented Chardonnay and Pinot Noir, no commercial yeast since vintage one, dry-farmed grapes including from Perkins Harter's Bracken Vineyard, maximum 2,500 cases per year. The Eola-Amity Hills site delivers a cooler profile than southern Willamette — more tension, more precision, exactly what fish demands.
Oregon — McMinnville
Shiba Wichern Cellars
Founded by Akiko Shiba, trained in viticulture and enology at Hochschule Geisenheim University, Germany. Own-rooted plantings, regenerative farming, no commercial yeast, no fining. From the 2025 vintage, vinifying fruit from Perkins Harter's Bracken Vineyard. Around 1,000 cases per year. Their wines reflect the real terroir.
California — Sonoma
Six Cloves Wines
Founded by Sonoe Hirabayashi, a Japanese winemaker from Nagano with deep roots in fermentation — sake, miso, soy — trained at UC Davis. The philosophy is balance over extraction. Her Zinfandel is a genuinely good companion to Bluefin Tuna: enough structure to meet the umami, enough freshness to keep the pairing clean.
Albi, France — Tarn
Keiko et Jérôme
A Japanese-French couple in the Tarn region, combining Japanese natural farming philosophy with French natural winemaking. No additives, no mechanical intervention. The minimal-intervention approach shares the same spirit as Ikejime — letting the material speak without interference. Their wines have the transparency that makes pairing work.
Pairing by cut
What works with what
The fat content and flavor intensity of the cut should guide the pour. Richer cuts can absorb more tannin and body without being overwhelmed; leaner cuts demand more delicacy.
Akami — 赤身
High umami, low fat — needs a wine with good structure that can stand with the intensity. A cool-climate red with bright acidity and restraint works well. Zuke Akami (soy-marinated) is particularly good with an aged Oregon or Burgundy Pinot Noir — the umami deepens, and the wine's tertiary development meets it.
Akami →
Chutoro — 中トロ
Fat and umami in balance. A red with vibrant acidity cuts through the silky fat cleanly. Serve at cellar temperature — as the glass warms, the fat coats the palate and blurs the wine's impression. Shiba Wichern or Violin Wine Pinot, decanted briefly, is a natural match.
Chutoro →
Otoro — 大トロ
The richest cut demands some power in the wine — but old-world restraint still preferred over new-world extraction. Aburi (torching) with sudachi takes the synergy with red wine to another level: the Maillard surface and the citrus acid together neutralise Fe²⁺ while the caramelised fat calls for more body. Keiko et Jérôme's Hinagiku (Syrah) is my personal choice here — old-world restraint with the depth to match the fat. Goodfellow sparkling is an excellent alternative.
Otoro & sub-cuts →
Sasshu Salmon — 薩州サーモン
Raised on Chiran tea and mineral-rich groundwater — cleaner and less fatty than most salmon. A Chardonnay with vibrant acidity is the natural choice. A rosé Pinot Noir also works well. Because Sasshu is less fatty than other salmon, a little olive oil doesn't make it heavy — it adds depth without weighing down the pairing.
Sasshu Salmon →
Hokkaido Uni — 北海道産ウニ
Sparkling wine, always. Bafun Uni — intense, golden, mineral — calls for a wine with great mineral presence: Goodfellow Blanc de Blancs is a precise match. Murasaki Uni — larger, more delicate, pale — and vintage Champagne bring out the best in each other; the yeast complexity and fine mousse amplify the Uni's sweetness and oceanic depth.
Hokkaido Uni →