Boka Chaul takes twenty or thirty minutes in cold water, and then it is dinner. No fire, no pot, no fuel. It manages this because it carries very little amylose starch and a great deal of amylopectin, and because it absorbs water more greedily than almost any other rice measured—something close to three-quarters of its own weight. The Ahom soldiers ate it through the campaigns against the Mughals, which is the sort of detail that makes you look at a grain differently. Somebody, centuries ago, selected for an army that could not light fires.

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It received a Geographical Indication tag in 2018 and is sometimes marketed abroad as magic rice, which is both true and a diminishment. The rice is the result of a very long conversation between farmers and a plant, conducted in a language we have almost finished forgetting.

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Before the 1970s, farmers in India grew more than a hundred thousand varieties of rice. Roughly nine in ten of those have disappeared from the fields.

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That number gets quoted often enough that it slides past. Try holding it still for a second. A hundred thousand distinct answers to the question of how to grow food in a particular soil, in a particular rainfall, for a particular household. Most of them are now absent from the ground.

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What the Names Were Doing

The part that undoes me is not the genetics. It is the names.

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Farmers in Bengal named their rice varieties after the things around them, and the naming worked as a filing system.

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They named them for birds: Ghughu-shail for the dove, Mach-ranga for the kingfisher, Moyna for the myna. For fish: Rui, Tangra, Koijhuri. For flowers—dozens of them: Shurjamukhi, the sunflower; Krishnachura; Kadamful; Kamini.

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They named them for animals, in a register that is frankly funnier than agricultural nomenclature has any right to be: Shial Leji, the jackal's tail; Bura Horin, the old deer; Mokrimatha, the spider's head.

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They named them for colour, which is the closest thing to a plain description: Kalo Shona, black gold; Dudh-shail, milk. They named them for when they came in—Boishakhi, Kartikjhul, and Ashari—so that the name told you the season, and the season told you when to sow.

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And they named them for who deserved them. Thakur Bhog is the god's offering. Badsha Bhog is the emperor's. Gobindobhog, still grown in Bengal, is Gobindo's—which is to say Krishna's—and it earned the name as the rice used in offerings to Govindaji, the family deity of the Setts of Kolkata. It is short-grained, sticky, and smells like butter when it cooks.

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Every one of these names is a small compressed file. Say Bhutmuri to a farmer who knows it, and you have communicated a good deal at once: the hull is dark, which is where the ghost's-head name comes from; it puffs into an unusually crisp muri; and, according to a Bengali folk verse in praise of the old rice varieties, it is what you eat when the blood is thin. Modern analysis finds it high in iron, zinc, and copper. The poem got there first, working from observation across an unrecorded number of harvests.

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Sateen puts three kernels in most of its spikelets and is named for it. Kharah, from Odisha, runs purple through its stems and leaves. Nobody had to write a monograph. The name did the work.

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The Man with Fourteen Hundred of Them

In a village in the Rayagada district of Odisha, in the foothills below Niyamgiri, there is a farm of one and three-quarter acres called Basudha. It means Earth Mother in Bengali. The ecologist Debal Deb set it up, and on that small plot—and in the seed bank attached to it—he keeps more than fourteen hundred folk rice varieties alive.

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He started the seed bank in 1997 and called it Vrihi, the Sanskrit word for rice. It is now the largest open-access rice seed bank in South Asia. Farmers come and take what they need. Deb has given seed to more than seven and a half thousand of them, and he does not charge, because charging would make it a business rather than a return.

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One and three-quarter acres. Fourteen hundred varieties. Each one has to be grown out, kept separate so it does not cross, harvested, dried, stored, and grown again. The arithmetic of that is punishing, and it goes on every year, forever—or until enough of it is back in the fields not to need him.

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What a Seed Bank Cannot Hold

Here is the thing I keep circling.

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A seed bank preserves the seed. It cannot, by itself, preserve what the seed was for.

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Kartikjhul is a name that tells you about the month of Kartik. That information is useful only to somebody who still farms by that calendar, in that place, and knows what the sky does there in that month. The seed will keep in a jar. The knowledge that made the name meaningful lives in people, and people are moving to cities.

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We are good at recognising this loss when it takes a literary shape. When a language goes, we hold conferences. But a rice name is also a word, and it belongs to a vocabulary in which people stored what they knew about weather, soil, hunger, and medicine, and passed it on without ever writing it down. Lose the last farmer who plants Bhutmuri when someone in the house is weak, and the grain survives while the sentence around it does not.

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Deb's fourteen hundred are a library, and libraries are worth defending. But a library needs readers. Right now, a great many of these are books nobody is checking out.

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The Small Hope

There is one, and it is not sentimental.

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These varieties were kept because they worked. Under flood, under drought, in salt, on poor ground, without inputs. That is a set of problems the next few decades are going to hand us in abundance, and the hundred thousand experiments have already been run.

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So the case for Boka Chaul has nothing to do with nostalgia. Somebody solved cooking without fuel, and we would be foolish to mislay the answer.

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I would like to think we will keep the names too. Not the germplasm accession numbers. The names.

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Ghost's Head. Black Gold. The Old Deer. The Emperor's Offering.

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They are the only part of this that tells you a person was here, looking closely, for a very long time.