The Art of Italian Silk Making

I have a confession.

I used to think silk was silk.

I would run my fingers across a scarf in a boutique, feel that familiar slipperiness, and nod knowingly. Italian, the tag said. Pure silk. I believed it the same way I believed in the handbag I carried for three years—the one that wasn’t what it claimed to be.

Then I spent an afternoon in Como with a woman who had spent forty-seven years in the same weaving mill. She didn’t ask me what I thought of the fabric. She placed a length of raw silk taffeta in my hands and said, Listen.

I pressed it between my fingers. It resisted, then gave, then sprang back. It made a sound like dry leaves.

This, she said, is not fabric. This is a conversation between the worm, the water, and the woman at the reel. And you are three centuries late to hear the beginning of it.

She was right. I had been looking at silk. I had never once understood it.

The Smugglers and the Silk Road That Never Ended

Let me tell you how silk came to Italy.

The official story, the one you’ll read in museum plaques and polite histories, involves two monks. Emperor Justinian, desperate to break the Chinese monopoly, sent them east sometime around 550 AD. They returned with silkworm eggs hidden inside bamboo canes. Possibly they were disguised as priests. Possibly they actually were priests. The historical record, as always, prefers romance to certainty .

But here’s what the polite histories don’t emphasize enough: it worked. Within a century, Sicily was raising silkworms. Within five centuries, Lucca, Florence, Genoa, and Venice had built looms that could rival anything from the East .

The Silk Road is usually drawn as a line across Asia, from Xi’an to Constantinople. But that’s cartographic nostalgia. The real Silk Road, the one that still operates, terminates in Como. It always has.

Pliny the Elder, watching this material arrive in Rome without any understanding of its origin, called it lanicium silvarum—”yarn of the forests.” He thought it grew on trees . I find this strangely moving. The greatest naturalist of his age, confronted with something genuinely new, reached for the nearest available metaphor. We do the same thing today. We call silk “luxury.” We call it “heritage.” We reach for words that mean nothing because the process itself is too strange to hold in language.

The Worm That Eats Only One Thing

Here is the biological fact that determined Italian economic history for four centuries:

A silkworm will eat anything. It will consume lettuce, cabbage, the artificial diet scientists developed in the twentieth century. It will survive, spin its cocoon, emerge as a moth.

But it will not produce usable silk unless it eats mulberry .

This is not a matter of quality. It is a matter of possibility. The silkworm’s salivary glands convert the proteins in mulberry leaves into fibroin—the structural core of the silk filament. Without mulberry, the chemistry fails. The worm still spins. The thread breaks constantly. It cannot be reeled.

So when Ludovico Sforza, Duke of Milan, ordered mulberry trees planted around Lake Como in the fifteenth century, he was not simply encouraging an industry. He was transforming the land itself into a machine for producing a specific kind of thread . The locals gave him a nickname: Il Moro. The mulberry. The man who became the tree.

This is the first thing I wish someone had told me about Italian silk. It is not a product of Italy. It is a product of a single species of tree, an insect that cannot fly, and a series of hydrological accidents that placed abundant, soft water within reach of both.

Lake Como and the Po Valley provided the mulberry. The Alpine streams provided the water. The Lombard plain provided the canals. And somewhere in the sixteenth century, Bologna figured out how to make all of it move .

Bologna, Where Water Became Thread

I have a confession about Bologna.

I had visited the city three times before I learned about the silk. I ate the tortellini. I walked the porticoes. I stood in Piazza Maggiore and admired the unfinished facade of San Petronio. At no point did anyone mention that beneath my feet, the entire city was engineered as a silk factory.

Bologna has no major river. It has no natural harbor. In the twelfth century, its citizens looked at this disadvantage and decided, collectively, to ignore it. They dug. They diverted. They built locks on the Reno and Savena rivers, channeled water into canals with names like Moline and Navile, and threaded underground conduits—chiaviche—through the city itself .

This water did not primarily exist for drinking or sanitation. It existed to turn wheels.

By the fifteenth century, Bologna had become the Silicon Valley of silk. The city’s merchant-entrepreneurs centralized every stage of production within the walls: the purchase of cocoons in what is now Piazza Galvani, the reeling of filaments in private homes, the throwing and twisting in multi-story mills, the weaving distributed among hundreds of women working at home looms .

At the heart of this system was a machine so advanced that when the English finally copied it two centuries later, they still couldn’t replicate its efficiency. The Bolognese silk mill—il filatoio alla bolognese—was the most sophisticated industrial technology in Europe before the steam engine . More than a hundred of these machines operated in the city at its peak. Each one was two stories high, powered by the artificial currents running beneath the streets, staffed by women whose expertise was considered so valuable they were contractually prohibited from emigrating.

I learned this too late for my first visit to Bologna. I had walked past the Museum of Industrial Heritage, glanced at the sign, and kept walking toward the nearest trattoria. I hope you learn it in time for yours.

The Piedmontese Thread That Weavers Coveted

If Bologna invented the machine, Piedmont perfected the thread.

The Filatoio Rosso di Caraglio, built between 1676 and 1678, still stands on the outskirts of Cuneo. It is, by current consensus, the oldest preserved silk factory in Europe . The building is turreted, walled, courtyard—more castle than factory. Count Giovanni Girolamo Galleani, who commissioned it, clearly understood himself to be building something permanent.

He had come from Bologna, bringing the machinery and the knowledge. But what he produced in Caraglio was distinctly Piedmontese: a double-twisted silk yarn called organzino piemontese .

Organzine, in the technical vocabulary of silk, is warp thread. It must bear the tension of the loom, the constant friction of the weft passing through. It requires more twist, more strength, more consistency than the weft thread that simply rides across it. English merchants in the eighteenth century, Lewis and Loubière by name, examined Caraglio’s product and declared it “the finest silk produced in Europe” .

The French agreed. They bought almost all of it.

At its peak, Caraglio employed three hundred workers, most of them women. They were called maestre—masters—and their expertise was not generic . A maestra at Caraglio did not simply know how to reel silk. She knew how to reel this silk, from these cocoons, on these machines, to the specifications of weavers three hundred miles away who would reject an entire shipment if the thread broke more than twice per hour.

This is the difference between a craft and an industry. An industry standardizes. A craft calibrates.

What Actually Happens to the Cocoon

Let me slow down and explain what these women were doing.

Because I suspect, if you are like me, you have seen the photographs of silk production—the baskets of cocoons, the steaming basins, the patient hands—and understood none of it.

Reeling is the process of unwinding the cocoon. Each cocoon is a single continuous filament, between 1,000 and 4,000 feet long, held together by sericin—a water-soluble gum that the silkworm exudes to cement the structure . To reel silk, you must kill the pupa inside before it emerges and breaks the filament. You do this by heating the cocoons, traditionally in the sun or an oven .

Then you immerse them in water heated to 60-90°C. The heat dissolves the sericin. An operator—traditionally a woman, often a girl—brushes the surface of the water with a light whisk or corn beard until the filament ends adhere to it. She gathers two, three, four threads together and guides them through an eyelet to the reel .

The woman who performed this work was called the menatressa. Her job was to watch the thread continuously, attentively, for breaks or tangles, and to turn the reel at precisely the speed that would maintain tension without snapping the filament .

This is not skilled labor. This is skill, period. The menatressa was not replaceable. Her attention was the bottleneck through which all raw silk passed.

Throwing is the process that follows. The raw silk skeins are cleaned, twisted, and wound onto bobbins. Then they are twisted again—once for tram (weft thread), twice or more for organzine (warp) . The machines that performed this work, the filatoio and torcitoio, were the industrial secrets that John Lombe stole from Piedmont in 1716, hiding in Italian mills until he had memorized their design .

Weaving is the final transformation. The thrown silk threads are mounted on looms, the warp stretched taut, the weft passed through. This is where the fabric acquires its structure: the crisp resistance of taffeta, the fluid drape of charmeuse, the piled surface of velvet .

And then, if the fabric is to have color, it must be dyed.

Como, Where the Thread Becomes Fabric

All of this—the mulberry trees, the canals, the reeling basins, the throwing mills—converges on a single Italian city.

Como produces 85% of Italy’s silk and 70% of Europe’s. Annual output: 3,200 tons . These numbers are astonishing, but they obscure a more important fact. Como does not simply produce silk. It produces the silk that everyone else uses when they need their silk to be perfect.

The list of designers who rely on Como’s mills is not a list; it is a roll call of twentieth-century fashion: Yves Saint Laurent, Karl Lagerfeld, Chanel, Armani, Hermès, Ferré, Valentino, Versace, Ungaro . These houses do not buy from Como because it is economical. They buy from Como because a garment made with Como silk passes something intangible from the weaver to the wearer.

The Setificio Paolo Carcano, founded in 1869, still trains the masters who supervise this work . The Museo Didattico della Seta preserves functioning nineteenth-century machinery—twisters, weavers, dye vats—and runs it regularly so the knowledge does not become archaeology .

And the Fondazione Antonio Ratti, established in 1985, collects and studies textiles with the seriousness that other institutions reserve for paintings . Ratti, who made his fortune in silk, understood that his material was not merely a commodity. It was a repository of human attention, accumulated thread by thread, generation by generation.

What Makes Italian Velvet Different

I have saved velvet for the end because velvet is where the abstraction of “silk” becomes unmistakably physical.

Venice, in the sixteenth century, operated at least 6,000 looms dedicated to velvet production . Six thousand. Today, Tessitura Luigi Bevilacqua, founded in 1875 but tracing its lineage to a family of weavers active since 1499, continues to produce silk velvet on handlooms using techniques that predate the unification of Italy .

To understand what this means, consider the soprarizzo velvet that Bevilacqua still weaves. The pile—that soft, ticklish surface—is pure silk. The ground warp and weft may incorporate cotton or linen for strength, but the threads that rise from the base and catch the light are filament silk, reeled and thrown and dyed in the Lombard tradition .

Modern velvet, the kind produced industrially, is cut mechanically. The loops of pile warp are sliced by a traveling blade, producing an even surface at high speed. Bevilacqua’s velvet is still cut by hand, one row of loops at a time, on looms whose basic design has not changed since the Renaissance .

Misia, the Parisian fabric house, offers a silk-cotton velvet called “Venise” that requires fifty hours of weaving to produce two rolls. Fifteen thousand meters of silk thread are consumed for each meter of finished fabric. The finishing machine they use dates to the early twentieth century; they continue to use it because no modern equivalent produces the same drape .

I am not telling you this to shame you for owning industrially produced velvet. I own industrially produced velvet. Most of us do.

I am telling you this so that when you touch a length of Italian silk, you understand what you are touching: not simply a textile, but a continuity.

The Thread That Connects

There is a reason Italian silk survived the Pébrine epidemic of the 1850s, which devastated silkworm populations across Europe and forced mills like Caraglio to import eggs from Japan . There is a reason it survived the fascist autarky policies of the 1930s, which actively discouraged silk production in favor of domestically grown cotton and synthetic rayon . There is a reason it survived the postwar rise of polyester, nylon, and the entire synthetic revolution.

The reason is not economic. At various points, Italian silk has been less profitable than its competitors, less scalable, less responsive to market pressure.

The reason is that Italian silkmakers refused to accept that a thread is just a thread.

The Romans, encountering this material for the first time, believed it grew on trees. They were wrong about the botany. They were correct about the essence. Silk is not manufactured. It is cultivated. It emerges from a living creature that must be fed, sheltered, and protected from noise and temperature fluctuations. It is processed by human hands that require years to develop the necessary sensitivity. It is woven on machines that embody the accumulated intelligence of everyone who has operated them before.

This is not a supply chain. It is a form of attention that has been continuous for over five centuries.

I keep thinking about the maestre of Caraglio.

They were not educated in the formal sense. They did not leave behind treatises on silk production or correspondence with the French merchants who purchased their thread. They are visible in the historical record only obliquely—census counts, payroll records, the occasional legal deposition.

And yet, for generations, these women were the sole custodians of a knowledge that made Piedmontese organzine the most desirable warp thread in Europe. The English stole the machinery. They copied the building plans. They bribed the mechanics. What they could not replicate was the embodied judgment of the women at the reeling basins, who knew—without instruments, without standardized testing—whether the thread would hold.

I have never held a length of Piedmontese organzine. I do not know if any survives. But I have held a length of silk taffeta from Como, crisp as dried petals, and listened to a woman who had spent forty-seven years in the same mill explain that the thread still remembers the mulberry leaves, the canal water, the hands that guided it through the eyelet.

She was not speaking metaphorically. She was describing a property of the material that she had learned to perceive, the way a musician learns to perceive intervals.

This is the secret at the heart of Italian silk. It is not about technology or tradition or even quality, considered as a measurable attribute. It is about the refusal to forget that thread is never just thread. It is always also a record of everything that has touched it.

The first silk scarf I ever bought hangs in my closet. I have kept it for seventeen years, even after I learned that it was not made in Italy—only designed there, assembled elsewhere, stamped with a name that promised provenance it could not deliver.

I kept it because I wore it on the day I got married. Because my daughter, at age four, used to fall asleep clutching its corner. Because the thread, whatever its origin, has held.

I no longer believe that authenticity is a matter of geography. I believe it is a matter of attention. A length of silk made in Como with mulberry-fed cocoons, Alpine water, and the accumulated judgment of generations is not more “real” than my imperfect scarf. It is simply carrying more memory.

The silk you buy today will outlive you. Someone who has not been born yet will run their fingers across its surface and feel—without knowing why—that it holds something more than thread.

The question is not whether you can afford Italian silk. The question is whether you are ready to become part of the thread.

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