The Monk, the Clerk, and the Tax Collector

Medieval Bordeaux measured its year to Michaelmas, the 29th of September, and at each year's end the constables of the city closed their customs books on the wine that had passed down the Gironde. In the accounting year before the Hundred Years War broke out, the ledger recorded 74,053 tuns of wine. A tun was the great cask of the trade, about 900 litres, four of today's barriques. Twelve months later, with England and France at war, the same ledger recorded 16,577 tuns. Nearly four fifths of one of medieval Europe's largest commercial enterprises had vanished between one Michaelmas and the next.

A clerk wrote both numbers down, which is why anyone can quote them seven centuries later. This episode lives in that ledger. Between the fall of Rome and the modern market, wine's economics ran through two institutions, the Church that made it and the crown that taxed it, and the question the series keeps asking, who makes the prestige wine and who pays for it, gets two new answers in turn. Watch the maker shift from monk to Gascon grower to Portuguese shipper, and the payer from pilgrim and lord to the English crown to the British excise state.

The custodians

When Rome's logistics machine broke, the institution that caught the falling vine was the monastery. The Benedictines were the first great wine order; the Cistercians, founded at Citeaux in 1098 as an austere reform, became something stranger: Europe's most meticulous vineyard managers. They tasted, selected, recorded, and accumulated. Their emblem is the Clos de Vougeot in Burgundy, a vineyard assembled from donations and purchases over roughly two hundred years beginning in 1109, fully walled by 1336, and held as a single monastic property until the French Revolution dispossessed the Church four and a half centuries later. The monastery was the R&D lab and the land bank of medieval wine, and in this era the payer was the pilgrim, the lord, and the Church's own table.

The crown takes over

The handover from monk to merchant ran through a wedding, though not quite the way the legend says. In 1152 Eleanor of Aquitaine, her marriage to the King of France newly annulled, married Henry Plantagenet, who in 1154 became Henry II of England. Aquitaine, with Gascony and Bordeaux inside it, passed under the English crown. That is the legal hinge. The economic engine came half a century later, and it was a defeat, not a romance: in the era of Eleanor and Henry the wines England actually favored were the whites of La Rochelle and Poitou, and the decisive turn to Gascon claret came only after King John lost Normandy and the Loire lands in 1204 and began granting tax breaks and privileges to Bordeaux's vintners to keep the south loyal. A king buying loyalty with tax policy built the claret trade; his mother's wedding merely made it possible.

Built it to an astonishing scale. By the early 1300s Bordeaux was exporting about 80,000 tuns a year, roughly a quarter of it to England, carried by an annual wine fleet that sometimes numbered several hundred ships. The record year, 1308 to 1309, saw 102,724 tuns pass down the Gironde, about 85 million litres, a volume the modern Bordeaux appellation would not match again until well into the nineteenth century. And the crown was the trade's biggest beneficiary: in the years 1401 to 1413 the wine custom brought the English administration in Gascony an average of about 1,050 pounds a year, against about 176 pounds from everything else it taxed, salt, honey, woad, and alum combined. Wine was not a line in the budget. Wine effectively was the budget.

Then the shocks came in waves. War cut the trade by nearly four fifths in a single year. The Black Death year of 1348 to 1349 reduced the wine fleet to 74 ships and exports to about 5,923 tuns, the lowest figure known for the entire fourteenth century. Breton, Norman, and Castilian pirates learned the convoy schedules and hunted the predictable autumn and spring sailings. And in 1453 France retook Bordeaux altogether, ending three centuries of English rule; English merchants could still come, but under curfew, disarmed at Blaye, limited to a month in the city, and wearing a red cross in public. The trade survived all of it, buckling but never breaking, as one historian of the period put it. The numbers themselves survive because of a scholar worth naming: Margery Kirkbride James, the mid-twentieth-century historian who reconstructed the constables' customs accounts into the export series this episode is built on. A clerk kept the books; a scholar six centuries later decoded them. Heinrich Dressel did the same for Rome's amphora stamps one episode ago. It will keep happening.

The tax that did what war could not

Here is the turn. War, plague, and piracy battered the claret trade for three hundred years and never killed it. What finally took French wine off the English table was a duty schedule.

After 1689, Britain at war with France raised wine tariffs into a weapon, and the duties were levied by volume, which meant cheap, light French wine paid the same as great wine and was priced out first. The Methuen Treaty of December 1703 then gave Portuguese wine a third less duty than French, permanently. The substitution shows up directly in the trade record. French wine, already down to under a third of British wine imports in the 1680s, fell to under four percent within a few decades, while Portugal climbed from about a fifth to more than half, and to three quarters by the 1740s. Those shares come from the long-run British import series compiled by Kym Anderson and his colleagues. The economist John Nye, in War, Wine, and Taxes, puts the collapse even more starkly and estimates that British consumption of French wine might have been as much as forty times higher under genuine free trade; treat that counterfactual as his argument rather than a settled figure, and note that his grander thesis, that free-trade Britain was a myth, was contested by Douglas Irwin in the early 1990s. What is solid is the mechanism, and the mechanism is the story. A tariff line built the Port industry from almost nothing, fortified wine filled the vacuum, and the duties sheltered British brewers whose excise payments funded the state. The trade reopened only with the Cobden-Chevalier treaty of 1860.

There was even a strange gift inside the punishment. Because the volumetric duty made cheap French wine pointless to ship, the only French wine still worth sending to Britain was the best and most expensive. The tariff pushed France upmarket, toward exactly the premium tier this series is about.

What it confirms

This is the first true renegotiation of the series, and it happens twice. The maker of prestige wine shifts from the monk to the Gascon grower to the Portuguese shipper; the payer shifts from pilgrim and lord to the English crown to the British excise state. And the Methuen beat is the thesis at full strength, a genuine transfer: nothing about the wine changed in 1703, yet within a generation a nation's cellar had been swapped from claret to Port by a tax differential. Politics, not taste, decided what England drank. Keep that lesson; a memo out of Beijing will repeat it three centuries later.

The tariff era left Bordeaux with something more durable than volume: a brand, and a long paper trail of prices. In 1855, five brokers will turn that price history into a league table so sticky it has barely changed since. That machine is the next episode.