The owner has bought a case at auction and wants to know if it was a good buy. The label says Chateau Something, Pauillac, 1996. To answer, you need to know what the bank, the commune, the vintage and the classification each actually tell you, and what they do not.
Left bank and right bank
The Gironde estuary and its two rivers split Bordeaux in two, and the split is a soil story.
| Left bank | Right bank | |
|---|---|---|
| Soil | Deep gravel, warm, well-drained | Clay and limestone, cooler, water-retentive |
| Dominant grape | Cabernet Sauvignon (late-ripening; gravel warms it) | Merlot (earlier-ripening; tolerates cool clay) |
| Blend partners | Merlot, Cabernet Franc, Petit Verdot | Cabernet Franc, some Cabernet Sauvignon |
| Style | Firmer tannin, cassis, cedar, structured, long-lived | Plusher, softer, plum and fruitcake, approachable earlier |
| Key names | Medoc, Haut-Medoc, Pessac-Leognan | Saint-Emilion, Pomerol |
The climate is maritime and moderate: ripening is never guaranteed, rain at flowering or harvest is a real risk, and that is precisely why Bordeaux blends and why vintage variation matters so much here.
The Medoc communes
- Saint-Estephe — most clay, firmest and most austere.
- Pauillac — the classic: cassis, cedar, pencil shavings, powerful structure. Three of the five First Growths sit here.
- Saint-Julien — the balanced middle ground, elegant and consistent.
- Margaux — the most perfumed and finest-boned.
- Listrac and Moulis — inland, less prestigious, better value.
The 1855 classification: what it actually classifies
This is a favourite trap. In 1855, brokers ranked chateaux, not vineyards, by the prices their wines were then fetching. It covers the Medoc plus one Graves estate, Chateau Haut-Brion, in five growths (Premiers to Cinquiemes Crus). It has barely changed since.
Note carefully what it does not cover:
- Pomerol has no classification at all — Petrus and Le Pin command their prices purely on market reputation.
- Saint-Emilion has its own, separate classification, which is revised periodically and has proved contentious.
- Graves/Pessac-Leognan was classified separately, in 1959.
- Sauternes and Barsac were classified in 1855 as a distinct list: one Premier Cru Superieur (Chateau d Yquem), then Premiers and Deuxiemes Crus.
Because 1855 ranks estates rather than land, an estate can decline, or buy better land, and the ranking will not move. Treat it as history and reputation, not a live quality guarantee.
Sauternes and Barsac
Cool, humid autumn mornings off the Ciron tributary, burned off by warm afternoons, encourage noble rot (Botrytis cinerea), which shrivels the berry, concentrating sugar, acid and flavour. Semillon leads, with Sauvignon Blanc for acidity and Muscadelle. Yields are tiny, picking is done in repeated passes through the vineyard, and the wine is sweet, unctuous, honeyed and marmalade-like, with high acidity that keeps it from cloying and lets it age for decades. The labour explains the price.
Dry white Bordeaux
Sauvignon Blanc and Semillon: crisp and grassy at entry level; in Pessac-Leognan, barrel-fermented, lees-aged and seriously age-worthy.
Onboard Notes
For a Bordeaux at auction, provenance beats classification. A Fifth Growth with a flawless cellar history is a better buy than a Second Growth of unknown storage. Always ask where the bottle has been.