Picture them on the day they leave. Two Kadhua sarees, sisters off the same warp — the same silk, the same zari, the same weeks of the same hands. One goes to a house in Delhi, one to a house in Lucknow. Both are worn at weddings that winter. Both are loved. And then both are put away, which is where their stories quietly separate.

The Delhi saree is folded along the lines it arrived in, zipped into the plastic cover it travelled home in, and laid at the bottom of a steel almirah beneath six other sarees. The door closes. In a sense, it never really opens again — the saree comes out twice in two decades, admired through its plastic, returned unopened.

The Lucknow saree goes to a household with an older kind of memory. The grandmother there does something that looks, to a younger eye, like fuss. It is not fuss. It is, as we shall see, the same conclusion that the textile conservators of the world's great museums reached by an entirely different road.

What the grandmother does

First, she lets the saree rest. The night it is worn, it does not go into any cupboard at all — it lies open on a clean cotton sheet until morning, releasing the evening's warmth and the body's humidity. Her reasoning is instinct; the chemistry agrees with her. Silk is fibroin, a protein fibre spun by a living creature — closer kin to hair and fingernail than to anything synthetic — and like all protein fibres it absorbs moisture readily and must be allowed to give it back. Seal that moisture in, and over the years it does its slow work: silk yellows, and the metal beside it corrodes.

Then she wraps it — never in plastic — in an old, soft mulmul of her own, worn thin by decades of washing. Cotton against silk: the cotton breathes, keeps light and dust off the zari, and asks nothing in return. This too is conservation doctrine arrived at early; the museum world wraps its silks in washed, unbleached cotton or acid-free tissue for precisely her reasons. In the corner of the shelf, away from the fabric, she keeps a muslin pouch of cloves and dried neem leaves. Naphthalene balls never touch her silk — the vapours are harsh on metal thread, and the smell gets into the fibre and never fully leaves.

And twice a year — after the rains, and again when the winter sun turns mild — she takes the saree out and opens it fully in a shaded, airy room. Never sunlight: silk is among the most light-sensitive of all natural fibres, and the same sun that flatters zari for an evening will weaken and fade the fibre permanently in an afternoon. She lets it lie there for a few hours, the way you might let a guest sit and breathe before asking anything of them.

The fold, where time does its work

Here is the detail that separates the two endings, and it is small enough that almost everyone misses it. When the grandmother folds the saree back, she does not fold it the same way. She moves the creases — a hand's width this season, the pallu turned inward the next.

She knows, without having read it anywhere, what every textile conservator is taught in their first year: a textile does not age evenly, it ages along its folds. A crease concentrates stress on the same few warp threads for years; the fibre there fatigues and eventually breaks, which is why museum collections refold their stored textiles on a calendar, or avoid folding altogether and store flat or rolled. Zari raises the stakes further. Fine zari is metal — traditionally a flattened silver ribbon, often gilded, wound around a silk core — and metal does not forgive being asked to hold the same right angle for a decade. Her heaviest piece, a dense tissue, she does not fold at all; it lives loosely rolled, which is exactly how a museum would store it.

One more of her rules, and it has nothing to do with the cupboard: she dresses first and finishes the saree last. Perfume and deodorant go on long before the pallu does. Silver tarnishes by meeting sulphur — in city air, in spray mist, in the ink of newsprint — which is why nothing she owns is ever wrapped in newspaper, and why the invisible droplets of a perfume applied over a draped pallu will darken its zari over the years as surely as any neglect.

Twenty-five years later

You already know how this ends, but it is worth standing in both rooms.

In Delhi, a daughter is getting married, and the almirah is opened for the saree that was always meant for this. The plastic comes off and the room goes quiet in the wrong way. The silk has yellowed in long stripes — precisely along the folds, where trapped moisture and pressure worked together. The zari has dulled under twenty-five years of sealed, sweating plastic. And one crease, the oldest, has gone brittle enough that the fabric opens along it like a paper cut. The saree did not die of being worn. It died of being put away.

In Lucknow, the same week, the sister saree comes out of its mulmul for another wedding. It smells faintly of cloves. The zari is the colour it was. When it is shaken open it moves the way it moved in Banaras — with weight, with architecture. The grandmother is gone now, but her twice-a-year ritual turns out to have been a letter she had been writing to this exact morning, for twenty-five years. The conservators have a phrase for what she practised — preventive conservation, the discipline of arranging a textile's environment so that repair is never needed. She simply called it keeping the saree.

It is not too late

Most cupboards in India hold a saree that has been waiting like this — folded in plastic since some long-ago wedding — and very few of them are truly lost. If you have just remembered one, do not rub anything, do not wash anything, and do not iron anything directly. Open it, let it breathe in the shade, and look at it honestly. Stains go to a dry cleaner who handles handloom silk regularly and will say so when asked, with the stain named, not guessed; silk is dry-clean only, and even then only when it truly needs it, because an airing does more good than a chemical bath. Pressing, if it must happen, happens on the reverse, on low, through a cotton cloth. A blot, never a rub, for anything that spills in the meantime.

Then begin the grandmother's calendar, starting now. Silk forgives a great deal, once you stop asking it to live in plastic.