Sauternes Wine: Grapes, Taste, Sweetness and Pairings

What Is Sauternes Wine?

Sauternes is a sweet white wine from southern Bordeaux, France, made mostly from Sémillon grapes shrivelled by noble rot, a fungus that concentrates their sugar. It is deep gold and tastes of honey, apricot and candied orange, with fresh acidity. Most bottles hold 120 to 220 g/L of sugar, according to Wine Folly, more than the roughly 110 g/L in Coca-Cola.

What Does the Sauternes Label Guarantee?

The word Sauternes is an appellation (a protected place name), with rules set by INAO, France's appellation authority. They fix the villages, the grapes, hand picking, low yields and a sugar floor, but not the blend, the bottle size or the typical sugar level. If a sweet Bordeaux white names none of the five villages, it is not Sauternes.

Point	Required by INAO rules	Typical in the bottle	At the shop or table
Place	Five villages: Barsac, Bommes, Fargues, Preignac, Sauternes	About 2,200 ha in total	Barsac may appear instead of Sauternes
Grapes	Sémillon, Sauvignon Blanc, Sauvignon Gris, Muscadelle	At least 70% Sémillon in most vintages	No grape on the label means Sémillon leads
Harvest	By hand, in successive passes (tries)	Several passes over weeks	Part of why prices are high
Yield	25 hl/ha base, 28 hl/ha absolute cap	Often lower at top estates	Small volumes, small bottles
Ripeness	Juice at 221 g/L of sugar or more	Shrivelled, noble-rot berries	Weak vintages make little or no top wine
Alcohol	At least 12%	12% or more on the label	Lighter in alcohol than Port
Sugar left in the wine	At least 45 g/L	About 120 to 220 g/L	Always clearly sweet

What Grapes Are in Sauternes?

Four white grapes are allowed in Sauternes: Sémillon, Sauvignon Blanc, Sauvignon Gris and Muscadelle. Sémillon leads, and the merchant Jeroboams notes that almost every vintage contains at least 70% of it. The other three add acidity and aroma around it.

Sémillon came to lead for two reasons given in the INAO rules. Its thick-skinned berries take noble rot well. The vine also resisted mildew and oidium, two fungal vine diseases, and so came to dominate local plantings ahead of Sauvignon Blanc.

Grape	Place in the blend	What it adds to the glass
Sémillon	The base, at least 70% in most vintages	Body, honey and a waxy texture; catches noble rot easily
Sauvignon Blanc	The usual second grape	Acidity and citrus; keeps its acidity even in hot vintages
Sauvignon Gris	Often a minor part; a pink-skinned form of Sauvignon Blanc	Aroma
Muscadelle	Small amounts	A floral, grapey smell

Is Sauternes Fortified?

No. Sauternes is not fortified (spirit added, about 15 to 22% alcohol), and all of its alcohol comes from fermentation. The INAO rules describe fermentation stopping once the alcohol level kills the yeast, with sugar still left in the wine. Port works the other way: grape spirit goes in mid-fermentation, which lifts it to about 19 to 20%.

Late-harvest wine is a third route to sweetness. Grapes hang on the vine until they shrivel, with or without noble rot, so Sauternes is one specific kind of late harvest wine.

Where Sauternes Grows: Five Villages South of Bordeaux

Sauternes lies about 40 kilometres southeast of Bordeaux city, on the left bank of the Garonne, inside the Graves area. Five villages share the name: Sauternes, Barsac, Bommes, Fargues and Preignac. INAO counts more than 2,200 hectares and about 190 growers, making an average of 41,000 hectolitres a year (2010 figures).

A cool tributary, the Ciron, runs through shaded forest and joins the warmer Garonne at the edge of the appellation. It also separates Barsac from the other four villages. Soils mix gravel, clay and limestone, with limestone close to the surface at Barsac.

The Bordeaux wine guide maps the left bank and right bank around Sauternes. The French wine regions overview places Bordeaux on the national map, and the wine regions hub covers the rest of the world.

How Does Noble Rot Make Sauternes?

Botrytis cinerea is a fungus that usually ruins grapes as grey rot. In the right weather it becomes noble rot instead. It pierces ripe skins, water evaporates, and each berry shrivels, which concentrates its sugar, acid and aroma. Sauternes gets that weather year after year because two rivers meet at its edge.

The INAO rules credit the Ciron and Garonne confluence. Condensation brings heavy humidity at night and in the morning, and moving air dries the vines by day. The mist lets the fungus settle on the grapes. Sun and wind then stop it turning into grey rot.

Botrytis also leaves its own mark. It adds glycerol, which gives a silky feel, and smells of saffron, ginger, honey and beeswax that an ordinary white lacks.

Here the deciding part of terroir is river mist. Tokaji Aszú and German Trockenbeerenauslese come from the same fungus under different sugar rules, compared in how noble rot makes sweet wine.

How Is Sauternes Made?

Sauternes is picked by hand in successive passes called tries, because noble rot spreads unevenly. One bunch can be shrivelled while its neighbour is still plump. Pickers take only the ready berries on each pass, sometimes over several weeks. Under INAO rules, grapes with less than 221 grams of sugar per litre of juice are not ripe enough.

After pressing, the very sweet juice ferments slowly and stops with plenty of sugar left.

Weather decides how much wine a year makes. If noble rot fails to spread before autumn rain, producers declassify the crop or skip their top wine rather than release a thin one.

What Does Sauternes Taste Like?

Sauternes is full-bodied and clearly sweet, yet its acidity makes the finish clean rather than sticky. The colour is bright gold when young, often with a faint green rim, and deepens toward amber with age. The aromas fall into three groups.

• Fruit: apricot, peach, candied orange, marmalade and pineapple
• Noble rot: honey, saffron, ginger and a waxy, lanolin note
• With age: caramel, toffee, dried apricot, barley sugar and a nutty, savoury depth

Wine Folly puts most bottles at 120 to 220 g/L of sugar, against a legal floor of 45 g/L. For how that much sugar reads on the tongue, see tasting residual sugar in wine and the wine sweetness scale. The sweet vs dry wine explainer puts Sauternes at the far sweet end.

Sauternes vs Other Sweet Wines

Four routes lead to a sweet wine, and the route sets the flavour.

Wine	How the sugar concentrates	Spirit added?	Typical alcohol	Flavour signature
Sauternes	Noble rot shrivels the grapes on the vine	No	12% or more	Honey, apricot, saffron, marmalade
Ice wine	Grapes freeze on the vine; the ice stays behind in the press	No	About 7–12%	Pure citrus and stone fruit with high acidity
Port	Fermentation stopped early by adding grape spirit	Yes	About 19–20%	Ripe plum and blackberry, spirit warmth
Late-harvest	Grapes left to over-ripen and raisin in the sun	No	Varies widely	Ripe, jammy fruit, usually simpler

If you open one of these beside Sauternes, choose an ice wine. Neither is fortified, so the difference in the glass comes from noble rot against freezing. Port wine and the wider dessert wine family follow the other routes.

Sauternes vs Barsac and the 1855 Classification

Barsac is one of the five Sauternes villages, and its growers may label their wine as Barsac or as Sauternes. It lies across the Ciron from the other four, on limestone close to the surface. Wine Folly describes Barsac wines as lighter and fresher than those from the rest of Sauternes. If a label says Barsac, expect the lighter end of the style.

In the 1855 Classification, drawn up for the Paris Exposition Universelle, the sweet wines of Sauternes and Barsac were ranked alongside the red wines of the Médoc. One estate sits alone as Premier Cru Supérieur, with eleven Premiers Crus and fifteen Deuxièmes Crus below it. "Premier Cru Classé" or "Deuxième Cru Classé" on a label points to an estate on that list.

Cérons, Loupiac, Cadillac and Monbazillac in Bergerac make similar botrytis-sweet whites, each under its own appellation rules and never labelled Sauternes.

How to Serve Sauternes

Serve Sauternes chilled to 8–11°C (46–52°F) in a standard white-wine glass, in small pours of about 60 ml. A 375 ml half bottle, the usual format, fills about six of those glasses. Wine Folly puts a decent half bottle at $30 or more, so it suits a table of four to six people.

• Temperature: if the bottle is more than about 15 years old, serve it a few degrees warmer, as is common for mature Sauternes. The wine serving temperature chart has the full range.
• Ageing: drink it young for fresh apricot and orange, or keep it. Wine Folly gives a window of 5 to 30 years or more.
• After opening: a stoppered bottle keeps several days to a couple of weeks in the fridge, because sugar slows oxidation. How long wine lasts after opening compares other styles.

What Food Goes With Sauternes?

Salt and fat suit Sauternes better than sugar. Foie gras and salty blue cheese are the classic Bordeaux matches, because the sweetness softens salt and the acidity cuts through fat. If a dessert is sweeter than the wine, the Sauternes tastes thin and sour, so keep the plate a shade less sweet than the glass.

• Foie gras: the fat coats the mouth, and the acidity clears it between bites.
• Blue cheese: Roquefort's salt makes the wine taste fruitier, and the sugar tames the salt. Milder blues need less sugar, as wine with blue cheese explains. More matches are in wine and cheese pairing.
• Mildly spicy dishes: the sugar calms chilli heat in a mild curry or a Thai salad.
• Desserts: fruit tarts, crème brûlée and almond cake, all less sweet than the wine.
• Aperitif: a small chilled glass before dinner, the way many Bordeaux tables serve it.

Your First Sauternes Tasting

Start with a young Sauternes or Barsac in a half bottle, chilled, and taste the first glass alone. Then eat a piece of blue cheese and sip again, and note how the salt changes the sweetness. Use the look, swirl, smell and sip steps from how to taste wine. The small-pour method in tasting dessert wines properly keeps the sugar from tiring your palate.

Sommy's AI-guided tasting walks you through look, smell and taste after you photograph the label, and logs your notes to a tasting journal. Open a half bottle this weekend and log two notes, one glass alone and one with blue cheese.

Sources

1. INAO: Cahier des charges de l'AOP Sauternes
2. INAO: Sauternes product sheet
3. Wikipedia: Sauternes (wine)
4. Wine Folly: Serious Sweets, Sauternes Wine Guide
5. Jeroboams: Sauternes wine region and Sémillon grape guide