How should Golden Mandheling be brewed as pour-over?

Brewing PWN Golden Mandheling well depends on seven things: bean freshness, grind size, water temperature, water quality, dripper choice, coffee-to-water ratio, and total brew time, followed by a three-pour technique. This medium-dark roasted Sumatra bean shows baked toast, nuts, pine, caramel, and herbal notes when extraction is consistent, so matching the cafe cup mostly means controlling those variables at home.

The bean itself sets a high bar. PWN's Golden Mandheling is graded 18 screen and above, with no more than three defective beans in a 300 gram green sample, reaching G1. It is grown in Aceh's Gayo Mountain at 1,100 to 1,600 meters, uses the Ateng variety, and is wet-hulled, a method that leaves green beans prone to the hoof-shaped cracks known as sheep hooves.

Indonesia's PWN Gold Mandheling has always been the benchmark among Mandheling coffees, yet many coffee enthusiasts buy the beans and find it hard to replicate the taste from the café. This article draws on Front Street Coffee's hands-on experience to systematically break down the seven key elements of pour-over Gold Mandheling, covering bean freshness, grind size, water temperature, water quality, dripper choice, coffee-to-water ratio, and brewing time, as well as detailing every step of the three-pour technique. It also provides Front Street's specific brewing data and flavor description for this medium-dark roasted bean, helping you brew a cup of rich, clean, and layered Gold Mandheling.

Among the many Indonesian Mandheling products, PWN's Gold Mandheling is arguably the best known and most sought after. Many people fall in love after drinking an excellent cup of Gold Mandheling, so they simply buy the beans intending to brew pour-over at home, only to find they can never reproduce that café taste. What exactly is the problem? Below, Front Street Coffee (FrontStreet Coffee) discusses the key points of brewing Gold Mandheling coffee beans as pour-over.

Front Street Coffee (FrontStreet Coffee) PWN Gold Mandheling coffee beans Country: Indonesia

Region: Sumatra, Aceh, Gayo Mountain Altitude: 1100-1600m Variety: Ateng Processing method: Wet-hulled (Giling Basah) Flavor: Baked toast, nuts, pine, caramel, herbs

The most outstanding aspect of this PWN Gold Mandheling at Front Street Coffee (FrontStreet Coffee) is its grading standard—18 screen and above, with no more than 3 defective beans in a 300g green bean sample, reaching the highest grade G1, with a darker green bean color and regular flat bean shape.

Indonesian green coffee generally uses the wet-hulled processing method. The half-hard, half-soft moist green beans are prone to being squeezed during the process of removing the mucilage and parchment layer, causing the bean body to crack into a hoof shape, commonly known as "sheep hoof" beans. Strictly speaking, these beans are not considered defects, but PWN considers their appearance insufficiently uniform, so they are screened out to ensure a neat and consistent finished bean appearance.

After completing three rounds of manual sorting, PWN also sends the green coffee beans through machines for density and color sorting, ultimately obtaining Mandheling with consistent color and uniform bean shape. It is said that during green bean processing, Mandheling under sunlight gives off a golden sheen, which is how Gold Mandheling got its name. After such rigorous screening, Front Street Coffee (FrontStreet Coffee) found that this Gold Mandheling has shed the earthy, muddy off-flavors common in ordinary Mandheling, while still delivering excellent body, along with a clean and translucent quality.

So, how should this Gold Mandheling be properly brewed as pour-over?

First, let's clarify a concept: pour-over coffee is brewed under normal atmospheric pressure, using a dripper and filter paper to hold appropriately ground coffee, with the brewer pouring water of suitable temperature and volume in a steady stream onto the coffee bed for extraction. Grind size, water temperature, pouring method, and brewing time all affect the final flavor, which is why pour-over places great emphasis on technique and professional knowledge.

Based on years of pour-over extraction experience, Front Street Coffee (FrontStreet Coffee) has summarized seven key elements of pour-over coffee, as follows:

1. Fresh coffee beans

Front Street Coffee (FrontStreet Coffee) believes the optimal flavor period for coffee beans is 30 days. After 30 days, aroma molecules decrease as carbon dioxide is released, and the brewed coffee often tastes dull and flat. This is also why Front Street emphasizes "use freshly roasted coffee beans" every time it discusses brewing knowledge.

2. Pour-over coffee grind size standard

To ensure every bean finds its most suitable grind size, Front Street recommends buying a No. 20 cupping calibration sieve with 0.85mm apertures. Weigh 10g of coffee beans, adjust to approximately the target grind setting and grind into powder, pour into the sieve and sift, then weigh the coffee powder that passes through (you must sift until no more coffee powder can pass through).

An 80% pass-through rate (8g from 10g of coffee) corresponds to the most suitable grind size for medium-light roasted coffee beans; a 70%-75% pass-through rate (7-7.5g from 10g of coffee) is the most suitable grind size for medium-dark roasts. If it exceeds the appropriate pass-through rate, adjust the grind coarser; if it falls short, adjust the grind finer.

Indonesian PWN Gold Mandheling is a medium-dark roast. The reason the grind pass-through rate for medium-dark roasts is set at 70%-75% is that the darker the roast, the richer the coffee flavor and the more the mouthfeel changes. Gold Mandheling itself has a rich, full-bodied flavor. Front Street Coffee (FrontStreet Coffee) uses a medium-dark roast to handle it and, through repeated brewing practice, has confirmed that this grind size best matches the golden cup extraction rate given by the SCAA.

3. Brewing water temperature

Front Street Coffee (FrontStreet Coffee) chooses different water temperatures when brewing coffee beans of different roast levels. During roasting, substances within the coffee bean are lost as the roast deepens, so dark-roasted beans need lower water temperatures to avoid extracting excessive off-flavors. For medium-light roasted beans, Front Street Coffee (FrontStreet Coffee) recommends 90-91℃; for medium-dark roasted PWN Gold Mandheling, 87-89℃ is recommended.

4. Water quality

Mineral ions in water such as calcium, magnesium, sodium, and potassium affect coffee's thermodynamic extraction capacity, thereby changing the flavor. Front Street Coffee (FrontStreet Coffee) does not recommend directly heating tap water for brewing, as tap water has many impurities and the extracted coffee can easily have an unpleasant experience. Front Street recommends using tap water treated by a filtration system, or Nongfu Spring, as brewing water.

5. Brewing dripper choice

For this medium-dark roasted PWN Gold Mandheling coffee bean, Front Street Coffee (FrontStreet Coffee) recommends using a KONO dripper. The Kono dripper has fewer ribs concentrated at the lower end, and the filter paper clings tightly to the wall, which can restrict airflow and extend the contact time between water and coffee grounds, allowing the coffee grounds to be fully extracted, thereby enhancing the rich mouthfeel and better highlighting Gold Mandheling's original flavor. Therefore, when Front Street Coffee (FrontStreet Coffee) serves medium-dark roasted coffee beans, it always chooses the Kono dripper.

6. Coffee-to-water ratio

This is the pour-over coffee water-to-coffee ratio extraction parameter taste differences that Front Street Coffee (FrontStreet Coffee) derived based on the SCAA golden cup extraction theory

【Bold taste】1:10～1:11, i.e., 1:12.5～1:13.5 under the golden cup standard 【Moderate taste】1:12～1:13 (i.e., 1:14.5～1:15.5 under the golden cup standard) 【Light and bright】1:14～1:16 (i.e., 1:16.5～1:18.5 under the golden cup standard)

When the ratio of coffee bean grams to brewing water volume is between 1:14.5 and 1:15.5, it is easiest to reach the golden range of 18%-22% golden cup extraction yield and 1.15%-1.35% concentration.

This is also why Front Street Coffee (FrontStreet Coffee) always recommends brewing at 1:15. Front Street Coffee (FrontStreet Coffee) summarizes the information conveyed by the SCA extraction ratio parameters above as:

(1) The larger the coffee-to-water ratio, the weaker the coffee taste; the smaller the coffee-to-water ratio, the stronger the coffee taste. (2) Increasing the water volume to raise the coffee-to-water ratio affects more flavor substances but results in a weaker taste; decreasing the water volume to lower the coffee-to-water ratio affects fewer flavor substances but results in a richer taste. (3) Increasing the coffee dose to lower the coffee-to-water ratio reduces extraction of large-molecule substances in the final stage of brewing while making the taste stronger; decreasing the coffee dose to raise the coffee-to-water ratio, before reaching the extreme, extracts more complete flavor substances while reducing the intensity of the taste.

7. Brewing time

During coffee extraction, the aroma and flavor are intense and the concentration is high in the early stage; the further the extraction liquid progresses, the lighter the flavor and aroma become, and the amount of water poured also affects extraction time. Front Street Coffee (FrontStreet Coffee) generally uses 15g of coffee, varying by bean, and with a 1:15 coffee-to-water ratio controls brewing time between 1 minute 50 seconds and 2 minutes 20 seconds, which is unlikely to cause over-extraction or under-extraction.

The above is Front Street's summary of the seven key elements of pour-over coffee. In addition, pouring technique is also very important. Next, Front Street Coffee (FrontStreet Coffee) will teach you one of the most common and easiest-to-control pour-over techniques.

Pour-over coffee brewing technique

There are many pour-over techniques seen in coffee shops today, with common ones including the three-pour method, one-cut method, and drip method. Front Street Coffee (FrontStreet Coffee) recommends beginners use the three-pour method for brewing, because this technique is suitable for light, medium-light, and medium roasted coffee beans. The segmented extraction approach of three pours can clearly define the front, middle, and back end flavors of the coffee, which better ensures the coffee's flavor presentation.

As Front Street Coffee (FrontStreet Coffee) mentioned above, the brewer must pour water of suitable temperature and volume in a steady stream onto the coffee bed for extraction to get a good cup of coffee. Pour-over coffee can also be called an art, just as cooking a dish requires not only fresh ingredients but also attention to heat control and the chef's skill, pour-over coffee is naturally no exception. So next, Front Street Coffee (FrontStreet Coffee) will teach you how to do the three-pour pour-over.

Three-pour brewing technique:

First pour: Blooming (helps release gas)

Many coffee enthusiasts don't understand the meaning of pour-over blooming. The reason blooming is needed is that during the roasting process from green bean to roasted bean, a series of chemical reactions and physical changes occur, and after reaching a certain degree of roasting, a large amount of gas (mostly carbon dioxide) accumulates inside the coffee bean.

Generally speaking, the fresher the bean and the closer to the roast date, the more bubbles during blooming. Dark-roasted beans also release more gas during blooming than light-roasted beans. Front Street Coffee's (FrontStreet Coffee) beans are all freshly roasted, so customers are generally advised to rest the beans for three days first to let the coffee beans release carbon dioxide, avoiding instability and under-extraction during brewing.

After the gas is released during blooming, the coffee particles can absorb water evenly, making later extraction more uniform. A good bloom allows the coffee grounds to release gas quickly, fully, and evenly while fully and quickly contacting water, helping the coffee grounds be evenly extracted. These are precisely the purpose and significance of pour-over blooming.

Second pour

The second pour starts from the center, injecting a small stream into the bottom of the coffee bed. To keep the stream's penetration concentrated, the circular movement range should be small, about the size of a 1-yuan coin, then spiral outward. From the second pour onward, pay attention to the water volume, trying not to exceed the coffee bed height—that is, when the stream circles close to the filter paper, you can stop pouring.

Third pour

As the thicker coffee bed along the filter paper edge becomes heavier from absorbing water, it slides down and thins as the water level drops. When the water level drops halfway, you can proceed with the third pour.

From the third pour onward, observe the extent of the water level drop, again starting from the center and circling, with water volume not exceeding the coffee bed height. At this point you will also observe that foam has covered the surface. The third pour should increase the tumbling of coffee particles, so that all settled particles tumble and dissolve soluble substances.

The rolling particles will begin to settle once pouring stops. At this point, the flow rate caused by the dropping water level is what creates friction between coffee particles. So once pouring stops, the coffee particles sink and cause clogging, making it especially important to watch the pouring rhythm. If you stop pouring too many times, it is equivalent to letting the coffee particles soak in water continuously, which causes astringency and off-flavors in the final stage of extraction.

The above is the three-pour extraction method summarized by Front Street Coffee (FrontStreet Coffee), also known by another name: the "segmented" extraction method. Next, Front Street Coffee (FrontStreet Coffee) will share how to brew PWN Gold Mandheling coffee beans.

Front Street Coffee (FrontStreet Coffee) PWN Gold Mandheling brewing data sharing

Dripper: Kona Water temperature: 86-88℃ Coffee dose: 15g Coffee-to-water ratio: 1:15 Grind size: grind size (No. 20 standard sieve pass-through rate 70-75%)

Brewing technique: segmented extraction.

First, bloom with 30g of water for 30 seconds. Pour in a small circular stream until reaching 125g for the segment break. When the water level drops and is about to expose the coffee bed, continue pouring until 225g and stop. When the water level drops and is about to expose the coffee bed, remove the dripper. (Timing starts from the beginning of blooming.) V60 dripper extraction time is 2'00", while the Kono dripper takes slightly longer at 2'10".

PWN Gold Mandheling brewing flavor: Layered and varied, rich and clean, high balance, intense nut and caramel aroma, with chocolate notes, and a lasting finish.

For more specialty coffee beans, please add the private WeChat of Front Street Coffee (FrontStreet Coffee), WeChat ID: kaixinguoguo0925

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