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Ai Ni Estate: Yunnan's Coffee Seed Gene Bank

More than a hundred years ago, French missionaries carried coffee seeds into Yunnan, beginning the province's history of coffee cultivation.

Today, in Pu'er, Yunnan, the Ai Ni Estate — located in China's golden coffee-growing zone — is quietly becoming Yunnan's coffee seed gene bank.

Seven years ago, more than 30 different varieties of precious coffee seeds crossed the oceans, aided by Starbucks and the Yunnan provincial government, to "settle" at Ai Ni Estate.

The scenic estate, wrapped in cloud and mist, unfolds as forest after forest with the Lancang River running through it. Besides its coffee farmers, these seeds are the estate's most precious treasure — and the life's work of its founder, Mr. Liu Minghui.

Back in the 1980s, while serving as executive officer of the UNDP's Yunnan Coffee Project alongside Dr. Vayallo, an international coffee breeding expert from the International Coffee Organization (ICO), Liu heard a lesson about genes he never forgot: only God can create specialties.

From then on he devoted himself to collecting coffee varieties from around the world, determined to show that Yunnan, too, can grow outstanding coffee. Today he has built Ai Ni Estate into a living exhibition garden of world coffee varieties. Ted Lingle — a world authority on coffee, former president of the Specialty Coffee Association of America, and senior consultant at the Yunnan International Coffee Exchange Center — has visited to study its varieties firsthand, and the gene bank draws crowds of coffee lovers during each harvest season.

Caturra

A summer like berries — refreshing and delightful.

Caturra is a natural mutation of the Arabica variety Bourbon.

(Note: for historical reasons, Arabica varieties are often called "small-grain" coffee in Yunnan. Typica and Bourbon are Arabica's two original varieties — the prototypes of every coffee tree.)

Caturra was first discovered in São Paulo state, Brazil, in 1937. It yields well, cups well, resists leaf rust, and grows on relatively short plants that make picking easy — though cultivation costs are higher, and like Bourbon it suffers from a two-year cycle of yield fluctuation. Despite being found in Brazil, Caturra never suited the country well; it instead spread through Central and South America, with Colombia, Costa Rica, and Nicaragua planting it on a large scale. When coffee prices soared in the 1970s, farmers switched to Caturra for higher yields, and with strong backing from the Brazilian and Colombian authorities, high-density, sun-grown cultivation took hold. By 1990, Caturra production had grown by 60%, and the variety became a mainstay for producing countries everywhere.

In July 2018, Caturra thriving at Ai Ni Estate.

Caturra arrived at Ai Ni Estate in 2011. After nearly seven years of cultivation, repeated cuppings have scored it above 83 points. Jeremy Wakeford, a former Starbucks cupping master with 50 years of international cupping experience, described its cup as toasty, with refreshing fruit acidity, berry flavor, and good sweetness. The Caturra from the 2017-2018 harvest in particular earned high marks from the estate's quality control team, and drinkers who prefer light, fresh flavors have taken to it especially fondly.

Catuai

Apple, pineapple, brown sugar — the warmth of mellow fullness and sweetness.

Catuai growing well at Ai Ni Estate, photographed in August 2018.

Catuai was bred in Brazil and is now widely grown across Central America. It, too, descends from Bourbon — an artificial cross of Caturra and Mundo Novo. The plants are relatively compact and stand up well to the elements, especially wind and rain. Catuai's cherries attach more firmly than most and are harder to pick, but the variety's storm resistance is outstanding. The fruit comes in both red and yellow forms; the trees that arrived at Ai Ni Estate in 2011 are the red-fruited kind, inheriting Bourbon's large, wavy-edged leaves. The higher the altitude, the better it cups — and the lower the yield.

Catuai.

Its cup is rich: apple, pineapple, and brown sugar.

Seasoned coffee drinkers say this bean's full sweetness is like stepping into a familiar café after a storm — the moment it slips down your throat, a warm feeling of coming home rises from the tip of the tongue and from the heart.

Villa Sarchi

Nut and chocolate flavors — a direct hit on the taste buds.

Villa Sarchi is another Bourbon variant, though Villa Sarchi is actually a place name in Costa Rica's Central Valley coffee region, in Alajuela province, where the variety was discovered in the 1960s. In 1974, Honduras' coffee institute IHCAFE introduced it for cultivation. The plants are small with green-tipped leaves and tightly clustered fruit; the cherries resist wind and rain and rarely drop prematurely. The variety demands ample fertilizer, prefers shade, and shows its best flavors at high altitude — in recent years it has been appearing on competition winner lists with increasing frequency, a dark horse with a bright future.

After seven years of cultivation at Ai Ni Estate, its innate nut and chocolate richness has changed many drinkers' picture of Yunnan coffee as purely bright and fruit-forward.

Villa Sarchi growing well at Ai Ni Estate, photographed in August 2018.

Regina

Floral, apple, caramel — "Yunnan flavor" at its sweetest.

Hansen wrote in "The Triumph of Seeds":

We live in a world full of seeds. From the coffee and bread at breakfast, to the cotton in our clothes, to the cup of cocoa before bed, seeds accompany us all day long.

Seeds give us food and fuel, drink and poison, petroleum, dyes, fibers, and spices. Without seeds there would be no bread, rice, beans, corn, or nuts. They are the pillars of life — the foundation of daily diets, of economies, of ways of living the world over.

Regina at Ai Ni Estate, photographed in August 2018.

Every cup of coffee we drink is, in the end, the triumph of the coffee seed. And a coffee seed's journey — from seedling to transplant to first flower and fruit — takes four years, passing through countless pairs of farmers' hands and long, careful nurturing.

Regina.

The origins of this mysterious variety remain unknown. But its rich florals and its apple and caramel sweetness, weathering seven years of wind and rain at Ai Ni Estate, deliver an ultra-sweet cup that adds its own unmistakable color to Yunnan's coffee palette.

A tribute to the triumph of coffee seeds!

And a tribute to the farmers cultivating patiently behind the scenes — the hardest-working people in the coffee chain.

The flavor of coffee is like the colors of a rainbow.

FrontStreet Coffee Recommendation

Yunnan coffee — often called "Yunnan small-bean" coffee, a local name for Arabica — traces its roots to 1904, when French missionary Tian Deneng brought Typica seeds from Vietnam and planted Yunnan's first coffee tree in Zhugula Village, Binchuan County. The province lies squarely on the golden coffee belt within 25°N latitude, with most growing areas above 1,000 meters: fertile slope soils, abundant sun, generous rain, and wide day-night temperature swings that coffee trees love. Production is concentrated in the southwest, across the four great regions of Baoshan, Dehong, Puer, and Lincang.

For an easy entry into Chinese specialty coffee, FrontStreet recommends its Yunnan Baoshan small-bean — washed and medium roasted, with a gentle caramel sweetness that keeps some bright acidity and expresses the region's terroir beautifully. For more defined flavors, try FrontStreet's 2013 natural Typica from its own estate: heavier in body with pronounced sweet-sour structure, citrus and berry tones, a hint of winey fermentation, caramel sweetness, and a creamy finish. And for espresso drinkers, the FrontStreet Dark Cocoa Blend — Yunnan small-bean with Brazil Cerrado — makes a balanced americano with nutty, brown-sugar notes and a latte as silky as almond and cream, ideal for beginners.