Showing posts with label Mandheling coffee. Show all posts
Showing posts with label Mandheling coffee. Show all posts

Saturday, April 25, 2026

Indonesian Coffee Varieties Explained: From Typica to Tim Tim (Complete Guide)

 Indonesia has long been one of the world’s top five coffee-producing countries, reaching an output of around 11 million 60-kg bags in 2024. Coffee cultivation here dates back to 1699, when it was first introduced by Dutch colonial merchants. In the late 19th century, coffee leaf rust severely impacted production, and these islands quickly became a testing ground for the fungus-resistant variety Coffea canephora (commonly known as Robusta). Liberica and Excelsa were also introduced in an ongoing effort to improve resilience and genetic diversity.

Today, the Indonesian archipelago remains highly relevant in modern coffee production. Regions such as Java, Sumatra, Sulawesi, Bali, and Flores combine rich botanical resources, a long history of cultivation, and proximity to rapidly growing Asian coffee markets. Although these areas remain vulnerable to climate change, unpredictable weather, typhoons, and earthquakes, they are expected to sustain production well into the foreseeable future.

As a result, Indonesia has developed a uniquely diverse set of coffee varieties and a distinct vocabulary around them. Drawing from a compiled reference I came across, let’s take a closer look at some of the major coffee varieties grown locally in Indonesia.


1. Abyssinia

Mentioned in A Review of Indonesian Coffee Research Literature as “Abyssinia Arabica,” this variety was introduced in 1928 from mother trees in what was then referred to as the “Abyssinia Estate” (modern-day Ethiopia). Eleven selections were brought to Indonesia and numbered, with seven (AB1–AB7) released. Among them, only AB3 is still locally referred to as “Abyssinia” (or variants like “Adsenia” or “Abissinie”).

AB3 later traveled from Java to Cameroon, where its genetic lineage was preserved, and eventually made its way to Costa Rica before spreading throughout the Americas. Morphologically, it resembles Typica and is often mistaken as related, but genetic identification by World Coffee Research confirms its Ethiopian origin. Globally, AB3 is better known as “Java.”



2. Andungsari

This variety was selected in 1982 by the Indonesian Coffee and Cocoa Research Institute (ICCRI) in East Java through agronomic trials that lasted about 17 years, evaluating yield, quality, and other factors. It was officially released as a commercial variety in 1999. Named after the Andungsari experimental station where it was developed, this composite variety is typically grown at high altitudes between 1,400 and 1,700 meters, allowing for slower cherry maturation and richer flavor development.

Andungsari combines desirable traits from multiple parent lines, offering leaf rust resistance, high yield, and excellent quality. It provides more stable income for farmers while delivering a distinctive Indonesian flavor experience. Under washed processing, it is said to produce an exceptionally juicy cup with black tea and floral notes, challenging the traditional perception of Indonesian coffee as heavy but lacking acidity. When naturally processed, it exhibits wine-like aromas, maple syrup sweetness, and greater body with complex flavor layers.

3. Ateng
Ateng holds a role in Indonesia similar to Caturra in Colombia. The name is derived from “Aceh Tengah,” and it is typically grown at lower altitudes, often not regarded as a high-quality variety. Rather than being a distinct new variety, Ateng is a localized name for Catimor-type cultivars in Indonesia. In Indonesian, “Ateng” means “small,” referring to its compact plant structure.

Its genetic makeup blends Arabica and Robusta, giving it strong resilience. It is widely cultivated across major Arabica-producing regions, especially Aceh, Lintong, and West Java. Under traditional wet-hulling processing, Ateng produces classic Mandheling characteristics: herbal, spicy, with notes of dark chocolate, pine, and caramel, a heavy body, and low acidity. However, when grown at higher altitudes and processed carefully, it can reveal surprising potential, including stone fruit notes like peach and apricot, along with a cleaner profile.


4. Bergendal

Bergendal is the local name in Sumatra for one of Indonesia’s oldest and most classic Typica lineages. If Ateng represents the “modern force” of Indonesian coffee, Bergendal is the time-honored “classical aristocrat.” Introduced by the Dutch from India to Java in the late 17th century and later spread to larger islands like Sumatra, Bergendal is a direct descendant of this early Typica lineage.

The name comes from Dutch—“Berg” meaning “mountain” and “Dal” meaning “valley”—aptly describing its growing environment. Unlike Ateng, Bergendal has no Robusta ancestry and remains a pure, traditional Arabica lineage, preserving the elegant flavor profile of classic Typica. It is known for low acidity, subtle fruitiness, and layered herbal and spice aromas, offering a balanced and gentle cup.


Bergendal is like a reclusive master craftsman—low yielding, but every bean carries centuries of flavor heritage. If you’re looking for a cup that combines the richness of classic Mandheling with a cleaner and more refined profile, lots containing Bergendal are an excellent choice.


5. Blawan Pasumah

This is a uniquely positioned variety in Indonesia’s coffee family tree. It is neither purely Typica nor Catimor, but rather a carefully selected local cultivar combining a Typica backbone with USDA lineage. In simple terms, it can be seen as an Indonesian version of a “refined Typica”—retaining classic flavor genetics while offering improved adaptability and commercial value.

The name reflects its origin: “Blawan” refers to the historic Blawan Estate in East Java, a Dutch colonial-era plantation where the variety was developed and promoted. “Pasumah” traces back to its original naming by Dutch botanist P.J.S. Cramer. After further selection and stabilization at Blawan, it became known as Blawan Pasumah.

Its USDA lineage refers to coffee varieties distributed globally by the U.S. Department of Agriculture, often selected for disease resistance and yield potential. As such, Blawan Pasumah is essentially a Typica-based selection enhanced with USDA genetic improvements, aiming to balance traditional flavor with modern agricultural needs. In the cup, it is typically cleaner than standard Mandheling, with reduced herbal notes and enhanced floral tones, fruit sweetness, and delicate acidity.


6. Borbor

Borbor has emerged in recent years as a highly regarded “star variety” from Sumatra. Although it has not undergone formal genetic verification, experts generally believe it may be a hybrid involving Tim Tim (Timor Hybrid) and Bourbon.

Under Indonesia’s traditional wet-hulling process, Borbor produces intensely rich and complex spice notes—clove, pepper, and tobacco—along with a heavy body and remarkable depth. If you’re seeking a coffee that represents Indonesia’s signature bold spice profile while meeting high specialty standards, a Borbor lot from Aceh is unlikely to disappoint.


7. Tim Tim

This is one of the varieties I’m most familiar with and have tasted frequently. Tim Tim is the Timor Hybrid, a natural cross between Arabica and Robusta discovered in the 1940s on Timor Island. It is known for its large, elongated beans—so large that even after roasting, they remain noticeably oversized, earning it the nickname “long-bean Mandheling.”

This variety emerged through natural hybridization and selection, and its strong disease resistance led to widespread cultivation.



8. Kartika

Kartika is a hybrid of Timor Hybrid 832/1 and Caturra, introduced to Indonesia in 1987 as part of Portuguese multi-location trials. It represents a somewhat “bittersweet” chapter in Indonesia’s coffee breeding history. Initially developed to combine disease resistance and high yield, it was once promoted as a flagship variety in 1993.

However, resistance is never permanent. As leaf rust evolved, it eventually overcame Kartika’s defenses. Today, it is no longer recommended for smallholders, illustrating a microcosm of modern coffee cultivation—where breeding successes can be temporary in the face of evolving pathogens.


9. S.795

Originally developed in India, S.795 is widely known in Indonesia as “Jember,” named after the research station in East Java where it was introduced in 1955. It is one of the foundational varieties for high-quality coffee production across Sumatra and Java.

Developed in the 1940s by India’s Central Coffee Research Institute (CCRI), S.795 has a complex lineage: Kent (a Typica mutation from India) crossed with S.288 (a natural hybrid involving Liberica and Arabica). By combining Kent’s flavor and disease resistance with the robustness of S.288, S.795 achieves a well-balanced profile while eliminating the undesirable “animal-like” notes often associated with Liberica. It stands as a successful example of cross-border breeding, proving that hybrid varieties can deliver disease resistance, high yield, and excellent cup quality.


10. P88

P88 belongs to the Catimor group and is a distant relative of Ateng. While both share Catimor ancestry, P88 was developed through more systematic international breeding programs, giving it a clearer and traceable lineage.

Introduced by the Dutch in the 1980s as part of variety trials, P88’s journey spans Kenya, Colombia, Thailand, and Indonesia. It inherits disease resistance from Timor Hybrid and the yield and flavor traits of Caturra. If Ateng is Indonesia’s localized “field performer,” P88 is the internationally bred “top student” that has successfully adapted and thrived in Indonesian conditions.



11. Sigarar Utang

This variety has one of the most striking names in Indonesia’s coffee world—literally translating to “the debtor must die.” Behind it lies a folk story about debts repaid either in money or coffee trees. Despite its intimidating name, Sigarar Utang is known for its remarkably sweet and elegant flavor.

It is a signature variety in Java and West Sumatra specialty coffee, recognized for its clean, refined profile. Most notably, it breaks away from the traditional Indonesian profile of herbal, heavy, low-acid coffee, instead offering a bright, clean cup with vibrant fruit notes.



12. USDA 762

USDA 762 is a heritage variety originating from Ethiopia’s wild forests, introduced by the U.S. Department of Agriculture and later flourishing in Indonesia. The number “762” is shorthand for its full USDA plant introduction code, PI 230762.

On December 20, 1955, French researcher J.B.H. Lejeune, working with the FAO, collected these wild coffee seeds in the Mizan Tafari region of Ethiopia’s Kaffa forest—very close to the origin of Gesha. After being sent to the U.S. and cataloged by the USDA, the seeds were distributed globally to research institutions, including Portugal’s Coffee Rust Research Center (CIFC) and Indonesian research bodies.

In recent years, USDA 762 has gained popularity in the specialty coffee world due to its exceptional flavor profile. It challenges traditional expectations of Indonesian coffee, showcasing elegance and clarity more commonly associated with Ethiopian lineage.

Wednesday, December 3, 2025

5 Best Coffee Beans You Can Buy Blindly — No More Guessing at the Shelf

 Have you ever felt completely lost standing in front of a shelf full of coffee beans? With all the different origins, processing methods, and flavor notes, it’s easy to get overwhelmed—only to end up bringing home a bag that tastes nothing like what you expected.

Choosing coffee beans isn’t as mysterious as it seems. Just remember three key points: origin, processing method, and roast date.
The origin determines the backbone of the flavor, the processing method gives it personality, and freshness is the soul of the cup. Generally, coffee tastes best within one month after roasting. Don’t stock up too much—fresh is always better.

Enough talk—let’s get straight to the good stuff. These five beans are tried-and-true “power players.” Whether you’re a beginner or a seasoned coffee lover, you can pick any of them with confidence.

1. Ethiopia Yirgacheffe — Washed Process

If you enjoy clean, bright flavors, this one won’t fail you. It’s like stepping into an early-summer orchard, with notes of citrus, jasmine, and lemongrass. The acidity is lively at first sip, followed by a honey-like sweetness and a crisp, refreshing finish.

Brewing tip: Use water around 92°C (about 198°F) and a slow, thin pour to bring out its delicate floral and fruity aromas. Perfect as a morning pick-me-up.

2. Colombia Huila — Medium-Dark Roast

Looking for a well-balanced daily companion? This is it. The cup is smooth and rounded, with flavors of nuts, caramel, and a hint of dark chocolate. The acidity is gentle, the bitterness is just right, and the body is solid—almost foolproof no matter how you brew it.

Brewing tip: Extremely beginner-friendly. Pour-over, French press, or even a Moka pot will give you a reliable, satisfying cup. Pair it with a breakfast pastry for perfection.

3. Indonesia Mandheling — Wet-Hulled Process

This one is for those who love bold, earthy, grounding flavors. Mandheling is known for its signature herbal and pine notes, with a thick, syrupy body that feels like blended dark chocolate and molasses. The finish is long and comforting. On rainy days or quiet moments, this cup just gets you.

Brewing tip: Try using slightly hotter water (around 94°C / 201°F) to bring out its full-bodied richness. A smaller-rimmed cup helps concentrate the aroma.

4. Kenya AA — Double Washed

A treasure for acidity lovers. Expect bright berry acidity—imagine the mix of tomato and blackcurrant—along with ripe fruit sweetness and layered complexity. High-quality Kenya AA often has an irresistible “juicy” character: vibrant, clean, and refreshing.

Brewing tip: Use a slightly coarser grind and slightly lower water temperature (around 90°C / 194°F) to make the acidity more lively and pleasant. A perfect afternoon refresher when you’re feeling drowsy.

5. Brazil Cerrado — Natural Process

A warm, dessert-like cup. The natural process brings a full, rounded sweetness, with flavors reminiscent of roasted nuts, milk chocolate, and a hint of spiced sweetness. Low acidity and a smooth, easy-drinking profile make it the “first love” of many new black-coffee drinkers.

Brewing tip: Excellent for milk drinks—the flavors blend beautifully with milk to create a toffee-like sweetness. A gentle treat on a busy workday.

The world of coffee is vast, but your daily beans don’t need to be complicated. The best cup is the one that makes you feel comfortable, relaxed, and genuinely happy. These five options are simply stepping stones, each representing a classic and widely loved flavor direction.

Have you tried any “daily drinker” coffee beans recently that surprised you?

Saturday, October 25, 2025

Why Japanese Coffee Lovers Prefer Flannel Filters Over Paper

 When it comes to flannel filters, many coffee lovers may have only seen them in Japanese movies or through videos by Japanese baristas. Compared with the common paper filter and dripper combo, the flannel filter is far less popular outside of Japan. Most people’s first encounter with it comes from Japanese coffee culture itself.

That naturally raises the question: why do Japanese people love brewing coffee with a piece of flannel cloth? What makes coffee brewed with flannel so different from coffee filtered through paper?

What’s Special About Flannel Filters?

If you’ve read my posts before, you’ve probably seen me mention this: flannel filters produce coffee that’s richer and more aromatic. The reason is simple — flannel doesn’t filter out oils and insoluble compounds as thoroughly as paper does.

Flannel is a soft, fuzzy fabric that originated in Wales, England. Since its invention, it’s been used in countless applications thanks to its versatility. As a coffee filtration tool, flannel can actually be traced back to the 17th century — before paper filters even existed. At that time, people in Europe used flannel cloth to strain brewed coffee. However, it wasn’t until hand-brewed coffee spread to Japan that flannel filters were truly adopted as a brewing tool rather than just a strainer.

Compared to paper filters, flannel has larger fiber gaps, which allow coffee oils and fine insolubles to pass through. Coffee oils contain fat-soluble aromatic compounds that give the brew a fuller, richer fragrance. Those oils and insolubles also enhance the body, making the coffee feel smoother and more rounded on the palate. That’s the main reason flannel-brewed coffee is so beloved.

Flannel Filter Types and How They’re Used

A flannel filter typically has two sides — one fuzzy (the “nap” side) and one woven (the “cotton” side). The nap feels soft and smooth to the touch, while the cotton side feels slightly coarse due to the weave texture.

Both sides can be used to hold coffee grounds, but most people — myself included — prefer to place the cotton side inside and keep the fuzzy nap side facing outward. Why? Because coffee grounds tend to cling to the nap, making cleaning much more difficult.

Flannel filters are usually attached to a special metal handle. You can hold it in your hand while pouring, or hang it directly over a server like a regular dripper. Most people choose the latter for both the convenience and the ritualistic charm it brings.

How to Brew Great Coffee with a Flannel Filter

Brewing with flannel isn’t much different from using a dripper and paper filter in terms of parameters. However, if you’re hand-holding the flannel rather than placing it on a server, you’ll need to adjust from a coffee-to-water ratio to a coffee-to-liquid ratio, since the scale only measures the liquid dripping out of the cloth.

When using a flannel filter, I prefer deep-roasted beans, as the characteristics of flannel naturally complement darker roasts. For this example, I used a deeply roasted Sumatra PWN Golden Mandheling.

Brewing parameters:

  • Coffee dose: 20g

  • Coffee-to-liquid ratio: 1:13 (equivalent to 1:15 coffee-to-water)

  • Water temperature: 88°C (190°F)

  • Grind size: EK43 at 10.5, with 70–75% passing a 20-mesh sieve (a bit finer than usual hand pour)

  • Pouring method: three-stage pour

Since we can’t see the total water volume when using flannel, the bloom stage is done simply by wetting all the grounds — not by adding double the coffee weight as usual. Start by pouring hot water into the center, then slowly move outward in circles until all grounds are evenly wet. This prevents channeling. Let it bloom for 30 seconds.

After blooming, pour with a steady stream, slowly spiraling from the center outward and back in again, repeating the motion until the water level nearly covers the coffee bed. Wait for it to draw down before starting the next pour.

During the third pour, focus your flow on the center of the bed, keeping your pouring circle within the size of a coin. Once you reach your target yield — in this case 260ml (based on 20g coffee and a 1:13 ratio) — remove the filter and stop pouring. Total brew time: 2 minutes and 21 seconds.

Comparing Flannel and Paper Filter Brews

I also brewed the same coffee using a Kono dripper with paper filter, under the same parameters, to compare. The flannel-brewed cup was noticeably more aromatic, smoother in texture, and had a longer aftertaste — though the differences were subtle unless tasted side by side.

Flavor-wise, both cups expressed the Mandheling’s signature notes of chocolate, nuts, pinewood, and spice, but the paper-filtered version was cleaner, while the flannel version offered a fuller body and deeper richness.

Why Flannel Isn’t Commonly Used in Cafés

You might be wondering — if flannel can produce such wonderful results, why don’t more cafés use it?

The answer is simple: flannel filters aren’t disposable. They require thorough cleaning and sanitizing after each use to maintain quality and hygiene. Compared with paper filters that you can toss out after brewing, flannel takes significantly more effort to maintain.

That’s why even in Japan, many baristas and home brewers now prefer the convenience of paper filters.

Still, both methods have their strengths. Flannel gives you aroma and body; paper gives you clarity and cleanliness. There’s no absolute winner — it all comes down to personal taste and the kind of coffee experience you want.