The scene repeats so often it has become a kind of ritual. A visitor — sometimes a bride-to-be, sometimes a daughter sorting her mother's cupboard — unwraps two sarees and lays them side by side on the baithak — the white-sheeted seat on which Banaras has always examined its silk. One has been in the family for thirty years. One arrived by courier last month, promised as handwoven Banarasi, and something about it has been bothering her ever since it arrived. She cannot say what. She only knows that the old one feels like a presence in the room, and the new one feels like a photograph of a presence.

Her instinct has history behind it. Banaras has been imitated for as long as it has been admired — and the modern version of the problem is well documented: from the 1990s onward, powerloom cloth and synthetic "silk," much of it woven far from Banaras, flooded the market under the Banarasi name, at prices the handloom could not meet because the handloom's price is mostly human time. It became serious enough that the weavers organised. We will come to what they did.

First, she asks the question everyone asks: how do you tell? And the honest answer is that there is no single trick — only a way of paying attention. So we do what the trade has always done. We turn the saree over.

The back never learned to perform

The front of any saree — real or imitation — was composed to please you. The reverse was never composed at all, which is exactly why it can be trusted. On the old family piece, the back is legible: you can read the work in it. The motifs sit clean and self-contained — this one is Kadhua, each flower woven separately, finished, secured, before the weaver moved on. On a Cutwork piece you would read a different honesty: the trimmed stubble of floating threads, evidence of that technique's own logic.

Then the new saree is turned over, and the room goes quiet. The reverse is eerily smooth — no structure, no decisions, no trace of anyone having been there. Because no one ever was. We have written a whole essay around this single habit — the Kadhua story — and it begins exactly where this afternoon begins: turn it over first, every time, in every house of silk in Banaras, including ours.

Her fingers find the second answer

Next, the zari — and here the conversation slows down, because words do tricky work in this market and we owe her precision. Real zari is metal: in its classical form, a fine flattened ribbon of silver, often gilded, wound around a silk core — the same family of thread that the old texts describe in cloth woven for gods and courts. Pure zari of this kind still exists; we weave with it; it is rare, and it is priced like the precious metal it is. Most fine handloom today carries semi pure zari or tested zari — metallic yarn that holds its colour and behaves like metal, because it is. The imitation market uses plastic film dressed in gold colour.

So we ask her to close her eyes and hold a border of each saree, one in each hand. She does not need a second attempt. The old zari is dense, cool, faintly heavy — it sits in the hand like a fact. The new one is light and slippery and a little too bright, like something trying hard. Her fingers knew before her eyes did. They usually do.

A seller who answers the zari question plainly — this is semi pure, this is tested, this one is pure and priced accordingly — is a house you may trust. Vagueness here is itself an answer.

Looking for a human in the weave

Now the magnifying glass comes out — not for drama, but because the next witness is small. Along the body of the old saree, the weave has moods. A motif fractionally denser than its neighbour. A weft line that thickens almost imperceptibly where, perhaps, the rhythm of an afternoon changed. Along its selvedge runs a faint row of pinpricks — marks left by the temple, the stretcher that held the cloth's width taut on the loom. Not every handwoven saree carries them, but when they appear they are a good sign: a tool's fingerprints, left by a process with hands in it.

The new saree, by contrast, is flawless — and that is precisely its confession. Every repeat identical, edge to edge, with the relentless evenness of something that never breathed. Perfect regularity is not the mark of higher quality. It is the mark of no one home.

What the weavers did about it

We promised her the history, and it matters, because it tells you how seriously Banaras itself takes this question. In 2007, the Banaras Bunkar Samiti — a body of the city's own weavers — together with eight other organisations, petitioned for legal protection of the name. On the fourth of September, 2009, it was granted: a Geographical Indication for "Banaras Brocades and Sarees." Since that day, only cloth woven in six districts of eastern Uttar Pradesh — Varanasi, Mirzapur, Chandauli, Bhadohi, Jaunpur and Azamgarh — may legally carry the name, and the certificate itself reads like a family register of the real thing: the Jangla, the Jamdani, the Tanchoi, the Tissue, the Cutwork, the Butidar, each named and claimed.

Ask about the GI, and about the Silk Mark; a house's willingness to speak of both is itself a kind of answer. But be clear-eyed about what paper can do. A certificate protects a name in law; it cannot sit on the baithak and read the cloth with you. Labels have been borrowed before and will be again. The saree is the chief witness. The rest are character references.

The arithmetic she does on the way home

Before she leaves, we give her one more instrument, and it is not in the cloth at all. It is arithmetic. A genuine Kadhua occupies a weaver — often two — for weeks. Add the silk, the zari, the dyeing, the warping, the naqsha drawn and translated before a single pick was thrown, and you arrive at a floor below which a handwoven Banarasi cannot exist. The new saree cost a few thousand rupees. It was never a bargain. It was a different thing altogether, wearing a borrowed name — and now she can hear the name not fitting.

And there is one question that costs nothing and reveals everything: may I see the reverse of the exact piece, photographed in daylight? A weaving house answers gladly, because the answer is its work. Evasion is a verdict she may accept on the spot. Every saree that leaves our looms travels with its reverse photographed in daylight — offered before it is asked for.