Tanzanian Coffee: Kilimanjaro, Mbeya and More

Tanzania grows coffee across three distinct zones -- the northern slopes near Kilimanjaro, the southern highlands around Mbeya, and a robusta-growing pocket near Lake Victoria -- and sells much of its arabica crop through a weekly public auction in Moshi rather than direct cooperative deals. Smallholders, not estates, grow the great majority of the national crop.

How much coffee does Tanzania produce?

The UN Food and Agriculture Organization put Tanzania's 2023 green coffee production at roughly 62,900 tonnes. Wikipedia's summary of the sector cites a typical range of 30,000-40,000 tonnes a year in earlier seasons, split roughly 70% arabica and 30% robusta, with coffee exports worth about $186 million in 2014, or 3.3% of the country's total exports that year. About 90% of Tanzania's coffee farms are smallholder plots, and the industry employs roughly 270,000 people, per Wikipedia.

Where is Tanzanian coffee grown?

The importer Royal Coffee groups Tanzania's coffee land into three zones. The Northern Highlands, around Arusha and Kilimanjaro -- including the Karatu and Oldeani districts west of Mount Meru -- are the country's most internationally recognized source. The Southern Highlands, centered on Mbeya and Ruvuma, cover districts such as Rungwe, Mbozi, Ileje, Songea and Mbinga and have seen rising smallholder output. The West Lake Zone, in the Kagera region near Lake Victoria, has historically grown robusta rather than arabica. Older Wikipedia figures also name Iringa, Kigoma, the Matengo Highlands, Morogoro, Ngara and the Usambara Mountains as arabica areas.

What varieties does Tanzania grow, and how is the coffee processed?

Most Tanzanian arabica comes from legacy Bourbon-derived cultivars, the same broad family grown in Rwanda and Burundi further west, though some producers are experimenting with newer techniques such as carbonic maceration. Washed processing is the standard route to market for specialty-grade arabica, following the familiar East African sequence of pulping, fermentation, washing and drying, while Kagera's robusta is typically processed as natural (dry-processed) coffee.

How is Tanzanian coffee graded and sold?

Tanzania grades coffee using British-derived nomenclature, with eleven official grades -- AA, A, B, PB, C, E, F, AF, TT, UG and TEX -- assigned by bean size, shape and density, according to Wikipedia. AA and PB (peaberry) are the grades most familiar to US specialty buyers, though peaberry itself, the small round bean formed when a cherry develops a single seed, gets deeper coverage elsewhere on this site rather than here.

Much of Tanzania's arabica moves through the Moshi Coffee Exchange, which holds public auctions on Thursdays across a roughly nine-month selling season -- a more centralized, price-transparent system than the cooperative-to-exporter chains common in Rwanda and Burundi. In a January 2015 snapshot cited by Wikipedia, AA-grade mild coffee averaged $192.01 per 50-kilogram bag at auction, while robusta lots ranged from $83.60 to $104.20; auction prices move with the world market and shouldn't be read as current figures.

When is the harvest, and what does Tanzanian coffee taste like?

Harvest timing varies by zone: Royal Coffee describes the Southern Highlands picking from roughly May through September, the Kilimanjaro/Moshi area from June through August, and areas near the Ngorongoro Crater running as late as November. Specialty-grade washed Tanzanian arabica is typically described as showing mild citric acidity with a milk-chocolaty body and hints of raisin or mild sweet herb, per Royal Coffee, with some lots approaching the brighter acidity more associated with Kenyan coffee. Japan, Italy and the United States are the leading export markets, and Japan specifically labels coffee "Kilimanjaro coffee" only when it contains at least 30% Tanzanian beans, a rule Wikipedia notes echoes the minimum-content thresholds used for blended coffees elsewhere.

How did Tanzania's coffee industry develop?

Coffee is old in north-west Tanzania. Wikipedia's account of the sector says coffee arrived in the region from present-day Ethiopia in the sixteenth century, and that the Haya people of Kagera boiled robusta beans and chewed them as a stimulant. Under German rule, colonists required arabica planting across the Bukoba region from 1911. After the First World War, British rule accelerated expansion, and the Chagga on the slopes of Kilimanjaro, who had no earlier history with the crop, took it up: by 1925 they exported 6,000 tonnes worth $1.2 million, and that year the Kilimanjaro Native Planters' Association became the first of the country's many coffee cooperatives.

The decades after independence were turbulent. The cooperative unions were dissolved in 1977 and replaced by the Coffee Authority of Tanzania, reforms in 1990 and 1994-95 privatized much of the industry, and the Tanzanian Coffee Board was reinstated to license the trade. Disease added to the pressure: coffee wilt disease appeared in 1997 and spread rapidly, according to the same account, and the Tanzania Coffee Research Institute was founded in 2000 as a non-profit government company, starting operations in September 2001. Timing matters for buyers too. Mercanta's seasonality guide, citing the ICO, puts the main harvest at July to December in the north and south and May to October in the west, with shipments usually starting in November and December (see coffee harvest seasons). Like most arabica countries, Tanzania also manages coffee leaf rust and the coffee berry borer.

How does Tanzanian coffee compare with Jamaica Blue Mountain?

Both Tanzania and Jamaica have built global reputations around a single named mountain -- Kilimanjaro and Blue Mountain, respectively -- and both rely on a Japanese-market rule that sets a minimum percentage of origin coffee a blend must contain before it can use that name. From there the two diverge: Tanzania sells much of its crop through the open, price-transparent Moshi auction, while Blue Mountain moves through a smaller network of estates and licensed factories, and Tanzania's brighter, fruit-and-herb cup contrasts with Blue Mountain's mild, low-bitterness balance. Readers can explore that milder profile via Jamaica Blue Mountain whole bean in the shop, or see how other African origins compare.