Tanzania grows arabica and robusta in similar amounts (USDA forecasts 850,000 bags of arabica and 750,000 of robusta for 2026/27): arabica in the far north and far south, robusta in Kagera by Lake Victoria. Its grade letters sort beans by size and density, not by how the coffee tastes, and peaberry (PB) is the grade Tanzania is known for.
Arabica grows in the northern highlands around Kilimanjaro, Arusha and Tanga, and in the southern highlands around Mbeya, Iringa, Njombe and Mbinga; robusta comes almost entirely from Kagera in the north-west, by Lake Victoria.
The 2026/27 split is from USDA’s PSD Online (July 2026 release). The USDA Foreign Agricultural Service’s Tanzania Coffee Annual of May 2026 (report TZ2026-0003) forecasts 1.6 million 60-kilogram bags for the 2026/27 marketing year, up from 1.45 million in 2025/26; the 2025 annual (TZ2025-0004) is the source of the farm figures below.
The USDA figures above are from USDA’s July 2026 release; its next world coffee report is due on December 16, 2026.
Table of Contents
What do Tanzanian coffee grades mean?
Tanzania runs its own grading system, close to Kenya’s. The green coffee importer Genuine Origin describes it as factoring in “species, bean size, density, processing method, and cup characteristics”, and gives the commonly traded grades as “AA (screen sizes 17 & 18), AB (15 & 16), C (14 & 15), and PB for peaberry“. The full official export grade set is longer, running down through smaller and lighter separations. Screen numbers are the size of the sorting screen’s holes in 64ths of an inch. Kenya uses the same letters with different cut-offs: the Nairobi Coffee Exchange sets Kenyan AA at screen 18 and AB at screens 16 to 17 (see our Kenyan coffee page), while Genuine Origin gives Tanzanian AA as screens 17 and 18, so a Tanzanian AA lot can include beans a Kenyan grader would call AB.
PB is peaberry: “a genetic mutation where only one seed develops inside a coffee cherry instead of two”, producing beans that are “smaller, denser, and rounder than regular coffee beans” (Genuine Origin). That is a fruit-set outcome, not a rung on a size ladder.
The important thing about grade letters is what they do not promise. A grade is assigned after the coffee has already been grown, picked and processed; sorting big beans out of a lot cannot make the lot taste better than it is. This is the same point our page on Kenyan coffee makes about the Kenyan AA/AB/PB system, and it applies identically here: the letters describe the bean, the cup score describes the cup, and they are different measurements. “Tanzania AA” on a bag tells you the beans are large and were carefully sorted. It does not tell you the coffee is good.
Peaberry is a partial exception only in that it is a shape rather than a size, and it is scarce. How scarce is disputed: Royal Coffee says “peaberries typically occur in about 5% of all coffee worldwide, regardless of plant type or origin”, while Genuine Origin puts it nearer one cherry in nine. Genuine Origin adds that they have to be sorted out of the harvest and that most go to Japan and the United States. Royal Coffee adds the commercial reality: “There seems hardly enough peaberry produced in Tanzania to meet demand.” Whether a peaberry lot tastes different from the same farm’s flat beans is a question this site has not cupped and will not pretend to have settled.
Where it grows
| Species | Share of production | Regions |
|---|---|---|
| Arabica | 53% | Northern highlands, including Kilimanjaro, Arusha and Tanga. Southern highlands, including Mbeya, Iringa, Njombe and Mbinga. |
| Robusta | 47% | Kagera, in the north-west corner near Lake Victoria. |
The 2025 annual describes the farming behind those numbers: about 90 percent of production comes from 320,000 smallholder farmers, with the rest from around 100 large farms. Plots average 0.63 hectares and carry 400 to 2,000 trees, and the trees are typically more than 25 years old, which is why so much of Tanzania’s recent policy has been about replanting, with the Tanzania Coffee Board having distributed 13 million improved seedlings by November 2023. The Coffee Board’s season calendar in USDA’s 2026 annual runs July to December in the northern and southern zones and May to October in the west; Genuine Origin likewise puts the harvest at July to December.
The importer Genuine Origin says most of the arabica now comes from the south: “only 25% of Arabica production originates from the mountain range” around Kilimanjaro and that “75% of Arabica is coming from the south of Tanzania”. It puts the Northern Highlands at 1,250 to 1,400 meters, the Southern Highlands at 1,200 to 1,800, and the robusta areas around Bukoba and Kagera at 1,200 to 1,400.
One placement worth knowing when you buy: USDA classes Tanzania as one of three major global producers of Colombian Mild Arabica, alongside Colombia and Kenya, accounting for six percent of that category. That is a trade grouping rather than a flavor promise, but it tells you which shelf importers file Tanzanian washed arabica on.
How it is processed
Most Tanzanian arabica is washed: the cherry is pulped, the beans are fermented to break down the remaining mucilage, then washed and dried. Washed processing is what produces the clean, high-acidity profile the country is bought for. Dry or natural processing, drying the whole cherry in the sun, is used as well, and gives a heavier, fruitier cup. Neither method is better; they are different products, and a bag that names its processing method is telling you something useful about what to expect.
Cooperatives do a lot of the work between the farm and the exporter. USDA notes that stable prices have strengthened Agricultural Marketing Cooperative Societies, which provide financing and training to growers. That is relevant if you are choosing between two similarly priced bags and one names the cooperative.
How did coffee reach Tanzania?
The oldest account is oral history. The importer Genuine Origin writes that “Oral history traces coffee’s role in Tanzanian culture back to the 16th century to the Haya tribe”, who brought it from Abyssinia (modern-day Ethiopia), and that coffee “first entered Tanzania via the Haya tribe”, in the West Lakes region by Lake Victoria, where the robusta grows. No source we have read documents that story.
The arabica side is documented. World Coffee Research records that French Spiritan missionaries planted coffee seeds from La Réunion at a mission they founded at Bagamoyo, on the coast, in 1862, and that “the Bagamoyo seedlings were used to establish several plantations in the Kilimanjaro region”. A research station at Lyamungu, near Moshi, began breeding from the trees in those plantations as early as 1930.
What is not in dispute is the shape of the modern industry: smallholder-dominated, cooperative-marketed, export-oriented, and split between two species grown at opposite corners of the country. That is the part that affects what is in your cup.
What it tastes like
Genuine Origin writes that “Chocolate and caramel notes permeate coffee from Kilimanjaro in the north, and citric acidity shines through coffees from southern regions like Mbeya”, and credits the Southern Highlands with “distinctly fruity, floral, and medium-bodied flavor profiles”. Robusta from Kagera is heavier and earthier, with more caffeine, and mostly goes into blends and instant coffee.
This site has not cupped a panel of Tanzanian lots, so it will not publish tasting scores or invent notes for a coffee you might buy. The roaster’s own notes on the bag are the claim that applies to the bag. What the origin gives you is a reasonable prior, not a guarantee; a Kagera robusta and a Mbeya washed arabica have almost nothing in common beyond the passport.
Brewing it
Dose it like any other coffee; the standard ratio and the cup arithmetic are worked through on our how much ground coffee for 12 cups page.
Ratios also vary by method. Pour-over is commonly brewed at 1:13 to 1:16 and French press at 1:10 to 1:16, because those methods have different contact times and different filtration. Both suit Tanzanian arabica: pour-over keeps the acidity clean, French press gives it more body. Pick the ratio for the method.
For water temperature, see our page on the best temperature for French press coffee, which gives the range with its source rather than repeating it here. Grind just before you brew, and use filtered water.
Gear
Affiliate disclosure: the two product links below are paid links. As an Amazon Associate I earn from qualifying purchases. Your price is the same either way. Neither product has been tested by this site. They are listed because a French press and a burr grinder are the two pieces of equipment that change a cup of Tanzanian coffee most, not because we compared them against alternatives.
- Bodum Chambord French press on Amazon — a full-immersion brewer, for when you want body rather than clarity.
- Baratza Encore conical burr grinder on Amazon — consistent grind size is the single biggest lever on extraction.
For pour-over equipment and everything else, our page on coffee tools and accessories covers the category properly.
Buying Tanzanian coffee
- A roast date, not a best-before date.
- A named region: Kilimanjaro, Mbeya, Mbinga, Kagera. “Tanzania AA” alone tells you only the screen size.
- Species, if the bag is vague. Kagera means robusta. Northern and southern highland origins mean arabica.
- Processing method. Washed and natural are different drinks from the same farm.
For neighboring origins with different profiles, see our pages on Rwandan coffee, Ethiopian coffee and Ugandan coffee.
Corrections to earlier versions of this page
- It carried three Amazon links with no affiliate tag and no disclosure. The two that still work are now tagged and disclosed; the third, which Amazon no longer serves, was removed.
- It said robusta is grown “at lower elevations, typically below 3,000 feet (900 meters)” without a source. Tanzanian robusta is concentrated in Kagera, and Genuine Origin puts the robusta areas around Bukoba and Kagera at 1,200 to 1,400 meters, so the claim was wrong for Tanzania. (A later version said no altitude figure had been found; the figure was in a source this page already cited.)
- It stated as fact that coffee reached Tanzania “in the 16th century, when it was brought from Ethiopia by nomadic tribes”. That is an oral tradition, which Genuine Origin attributes to the Haya people; this page now says so and no longer presents it as settled.
- A later version said other accounts put the first serious commercial planting under German missionaries. World Coffee Research credits French Spiritan missionaries, whose Bagamoyo seedlings started the Kilimanjaro plantations.
- Following USDA’s 2025 annual, it placed Iringa in the far north. USDA’s 2026 annual and the Coffee Board’s auction zones group it with Njombe and Ruvuma in the south.
- It said blackcurrant and berry are “the descriptors traders reach for”, with no source. The tasting notes now come from a named importer.
