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Tanzania Kilimanjaro AA Coffee Beans: A Full Analysis of Regional Terroir, Bourbon Variety, and Washed Processing

October 12, 2015
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African coffee has always been most notable for Ethiopia and Kenya, while Tanzania's coffee is often overlooked. In fact, Tanzania's coffee grading system is exactly the same as Kenya's, also using bean size as the criterion, with the highest grade likewise being AA. Front Street Coffee has specially introduced Tanzania Kilimanjaro AA coffee beans for this purpose. This article will systematically analyze the flavor formation of this bean from the perspectives of growing conditions in the producing region, Bourbon variety characteristics, washed processing method, and grading system, and will also include Front Street's pour-over recommendations and brewing parameters to help coffee lovers gain a comprehensive understanding of the unique charm of Tanzanian coffee.

坦桑尼亚乞力马扎罗AA咖啡豆:产区风土、波旁品种与水洗处理全解析

When African coffee is mentioned, most people first think of Ethiopia and Kenya, while Tanzania's coffee is rarely brought up. So how good is the quality of Tanzanian beans? According to what Front Street Coffee has learned, Tanzania adopts the same standard as Kenya for coffee grading—classifying by the size of green coffee beans, with the highest grade also named AA. For this reason, Front Street Coffee has also brought in a Tanzania AA-grade coffee bean. Next, this article will introduce the flavor characteristics and background story of this bean in detail.

Front Street Coffee: Tanzania Kilimanjaro AA Coffee Beans

Country: Tanzania Region: Northern Highlands, Kilimanjaro volcanic area Altitude: 1300-2000m Variety: Bourbon Grade: AA Processing Method: Washed Flavor: Citrus, berries, honey, tea-like

As shown above, this coffee comes from the Kilimanjaro volcanic zone. As a crop, coffee's flavor expression is closely related to its growing environment—altitude, climate conditions, soil composition, and other geographical factors all influence the final flavor direction of coffee beans. In addition, coffee variety and processing method also have a significant impact on flavor. Below, Front Street Coffee will analyze how the flavor of this Tanzanian coffee is formed from these three dimensions.

Tanzania Coffee Bean Growing Conditions

坦桑尼亚乞力马扎罗AA咖啡豆:产区风土、波旁品种与水洗处理全解析

Geographically, Tanzania is close to Ethiopia and borders Kenya, and in some areas the population has deep historical and cultural ties to coffee. However, commercial coffee cultivation in Tanzania started relatively late, only truly beginning in the early 20th century. At that time, German colonists encouraged local farmers to cultivate Arabica coffee as a cash crop, promoting it extensively across Tanzania and developing related industries around Mount Kilimanjaro.

Also according to Front Street Coffee's understanding, although Tanzanian coffee is less famous than Kenyan beans, its annual output is actually roughly comparable to Kenya's, at about 50,000 tons. The earliest Arabica seeds were introduced from Réunion Island and planted in Bayamoyo and Mogoro. In 1893, coffee cultivation on the slopes of Kilimanjaro achieved its greatest success. Later, in the 1950s, other varieties were successively introduced from neighboring Burundi and planted in western Tanzania. At present, Tanzanian coffee is mainly grown in high-altitude areas, accounting for 75%, although wild coffee plants still continue to appear locally.

What are the characteristics of the Kilimanjaro coffee producing region?

Mount Kilimanjaro is the highest peak on the African continent, and most coffee beans in this producing region are grown on slopes between 1,300 and 2,000 meters. This mountain has fertile volcanic soil, providing ideal conditions for the growth of high-quality Arabica coffee. At the same time, Kilimanjaro is also Tanzania's largest coffee producing region, and Kilimanjaro coffee occupies a pivotal position in the country's economy.

Tanzania Coffee Bean Variety

As mentioned earlier, the variety of this Kilimanjaro coffee is Bourbon, and Bourbon is also the most widely planted coffee variety in Tanzania. According to Front Street Coffee's understanding, Bourbon coffee was introduced to the Kilimanjaro region by Catholic missionaries in 1898. Subsequently, in 1920, the Kent variety was also introduced. Therefore, to this day, Tanzanian coffee is still mainly based on the two major varieties Bourbon and Kent. So what are the flavor characteristics of Bourbon coffee beans?

Bourbon Coffee Beans:

Bourbon, like Typica, is an old variety with a long history, and both belong to the Arabica species. Bourbon coffee was first planted on Réunion Island, which was called Île Bourbon (le Bourbon) before 1789, and the variety name comes from this.

Front Street Coffee notes that although Bourbon and Typica are both old varieties, there are obvious differences between them: Bourbon's leaves are broader than Typica's, its growth is denser, and its yield is about 30% higher than Typica's. Bourbon beans are rounder and shorter, with a thick berry-like acidity, prominent creaminess and aroma, strong acidity, and obvious fruity acidity. However, it also has the weakness of relatively weak disease resistance.

坦桑尼亚乞力马扎罗AA咖啡豆:产区风土、波旁品种与水洗处理全解析

In simple terms, Bourbon is a branch variety under the Arabica species, usually bearing red fruit and called Red Bourbon. In addition, there are also variants such as Yellow Bourbon and Pink Bourbon.

Tanzania Coffee Bean Processing Method

As mentioned above, this coffee uses the washed processing method. According to Front Street Coffee's understanding, washed processing is also the most commonly used processing method by Tanzanian coffee farmers. The greatest advantage of the washed method is that it can make the coffee's original flavor fresher and brighter, and the mouthfeel cleaner.

Steps of the washed processing method:

1. Screen and remove impurities mixed into the coffee cherries. 2. Remove the coffee pulp and outer skin. 3. Send into fermentation tanks and ferment for 18-36 hours to remove the pectin layer adhering to the parchment. 4. After washing clean, carry out drying.

Tanzania Coffee Grading

As Front Street Coffee mentioned above, Tanzania's coffee grading method is the same as Kenya's, both based on coffee bean size. During screening, green coffee beans are passed through screens with holes of fixed sizes; the larger the screen number, the larger the green coffee beans.

坦桑尼亚乞力马扎罗AA咖啡豆:产区风土、波旁品种与水洗处理全解析

AA grade: Screen Size between 17 and 18 (7.20mm screen) AB grade: Screen Size between 15 and 16 (6.8mm~6.2mm screen), PB grade: Round green beans, accounting for about 10% of all coffee beans C grade: Screen Size between 12 and 14 (4.8mm~5.6mm screen)

The Tanzania coffee bean introduced by Front Street Coffee is AA grade, belonging to the country's highest-grade coffee beans. So how does it perform in pour-over brewing flavor? Below, Front Street Coffee will share the pour-over parameters and flavor performance of this bean.

Front Street Coffee Tanzania Kilimanjaro Coffee Beans Pour-over Recommendation

Front Street recommends using a V60 conical dripper. The V60 has a larger opening, and with its unique spiral curve rib design, air is more easily released, thereby improving extraction quality. The mouthfeel may not be considered thick, but the sweet acidity and distinct aroma unique to Kilimanjaro brought by high concentration are one of its highlights.

Water temperature: 90-91°C Grind size: fine sugar size / No. 20 sieve bowl sifting powder to 80% Coffee-to-water ratio: 1:15 Coffee dose: 15 grams

Brewing method: staged extraction.

First, bloom with 30 grams of water for 30 seconds. For the second pour, pour in a small stream in circles until 125 grams, then stop. Wait for the water level to drop, then pour slowly again, keeping the speed even and the water level not too high. Stop when the water reaches 225 grams. The extraction time is 2 minutes 03 seconds (including the blooming time).

Brewing flavor: Berry aroma, with a soft citrus acidity on entry, nuts in the middle, and a honey-like finish.

The above is Front Street Coffee's summary of the flavor characteristics and related stories of Tanzania AA coffee beans. We hope this article can help coffee lovers gain a deeper understanding of Tanzanian coffee, so that in the future they can choose coffee beans that suit their own tastes.

So how much does a cup of Tanzania Kilimanjaro AA coffee beans cost? Taking Front Street Coffee's pricing as an example, a cup of Tanzania Kilimanjaro pour-over coffee is 30 yuan. We hope this price can provide some reference for coffee lovers.

The above content is compiled by CoffeeHunters, a coffee news website.

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