Welcome to FrontStreet Coffee · Beans roasted within 5 days · Orders before 17:00 ship same day · Next-day delivery in Guangdong · Coffee News
Home / Brewing Guides/ Features of Sumatra Coffee | What is the wet planing method for Indonesian coffee? What is the flavor and taste of Lintong Mandheling coffee beans? What are the key points of hand brewing PWN Gold Mandheling?

Features of Sumatra Coffee | What is the wet planing method for Indonesian coffee? What is the flavor and taste of Lintong Mandheling coffee beans? What are the key points of hand brewing PWN Gold Mandheling?

2026.10.20 FrontStreet Coffee 79

豆单


Although there are dozens of types of coffee beans on Front Street’s daily bean menu, if you pay careful attention, you will find that the flavor of each production area is different, and each type of beans will also have a unique aroma due to different processing methods and production steps. For example, the ones on Front Street Bean Listpwngold mandheling coffeeJust have itMandheling coffeeUnique herbal mellow aroma, but also has a clear and clean flavor and mouthfeel.


Mandheling coffeeCharacteristics of beans

Mandheling coffeeProduced in Sumatra, the most famous producing area in Indonesia, it is also known as "Sumatra coffee". High-quality coffee is mainly distributed in the northern part of the island, surrounding two volcanic lakes: Lake Tawar in Aceh and Lake Toba in Lintong. The two lakes contain fertile volcanic ash soil, coupled with the rainy seasons brought by the local tropical rainforest climate, making the coffee beans produced here rich in herbal flavor.



The year-round high temperature and high humidity environment, coupled with the scarcity of local fresh water resources, prevent local people from using washing methods like those in Central and South America. The African-style 20-day sun drying is even more difficult in tropical rainforest areas. So the locals developed a unique "semi-washing" treatment method based on local conditions - wet planing.



The coffee cherries with their skins and pulp removed are directly poured into the pool to ferment briefly for a few hours. At this time, a small amount of pectin will remain on the bean shells, and the mucous membrane is removed by scrubbing. Then the shelled beans are dried in the sun. The first drying only needs to reach 30-40% moisture content. In about 2-3 days, the coffee farmers will sell the green beans to buyers. Buyers will directly shell the purchased semi-dry shelled beans using a machine to obtain the innermost green beans.


image


Because the shelling machine uses a large amount of friction to crush the parchment paper layer that is close to the green beans, white or green mucus usually flows out from it at this stage. Due to long-term mucus soaking and humid environment, the green beans finally become soft, white and swollen, turning gray-green. After being stirred by friction, the green beans are more likely to be crushed or squeezed, especially at the two ends, forming small gaps, causing the beans to break.


羊蹄豆



The "naked beans" without the parchment skin dries very quickly. At the same time, they are directly exposed to a moist environment and are susceptible to the growth of various bacterial species. Give Indonesian coffee a unique aroma of wood, spices and herbs. This is what we call the "flavor of place". The wet planing method has shorter fermentation time and drying time than the traditional washing method, so it also saves a lot of labor.


image


What is Golden Mandheling Coffee?

In order to improve the quality of Mandheling coffee, PWN Company in Indonesia will hand-select the purchased Mandheling coffee beans four times to ensure that each green bean is complete, uniform, full, and the specifications must reach 18 mesh or above, which is the local G1 grade in Indonesia. Through cupping comparison, Front Street found that after strict selectionGolden Mandheling CoffeeIt eliminates the earthy and woody smell of general Mandheling, and the overall flavor is cleaner and brighter.


It should be noted that although there are many golden Mandheling coffees on the market, PWN Company has registered the trademark of golden Mandheling in the early stage, which means that only PWN golden Mandheling coffee is the real golden Mandheling coffee. To get a glimpse of the Mandheling flavor, Front Street thinksPWN Gold Mandheling Coffee is well worth a try.


曼特宁4


The most representative characteristics of Golden Mandheling coffee are spices, herbs and body. In order to present this tone, Front Street roasters use dark roasted coffee beans.


微信图片_20210417213312


The ​Pour over​(V60) flavor of PWN Gold Mandheling coffee

Golden Mandheling coffee has a complex aroma. To get the best flavor, Front Street recommends using freshly roasted coffee beans for brewing. Coffee beans will have their best tasting period 4 to 7 days after roasting. After this period (about one and a half months), the aroma will gradually fade and produce a woody flavor. Front Street believes that the freshness of coffee beans is particularly important, so the coffee beans shipped are freshly roasted within 5 days, plus the logistics delivery and transportation time, and you can start tasting them as soon as you receive them.


杯测3


Front Street’s brewing ideas for each coffee bean are based on the characteristics of the coffee during cupping. For example, the flavors of golden Mandheling coffee include herbs, dark chocolate, caramel, nuts, pine, etc. For this type of mellow-toned beans, FrontStreet Coffee baristas use kono filter cups. The ribs of kono are less than half the height of the filter cup. This design is actually to ensure that the filter cup sticks to the wall of the filter cup after it is wet with water, limiting the air flow. This will increase the time for the coffee powder particles to absorb water, so that the extracted coffee will be more uniform overall and improve the mellow taste. The grooved frame under the Kono filter cup is a key design to create a siphon effect for subsequent brewing.


IMG_3818


Because darkly roasted coffee beans are relatively loose and highly absorbent, it is easy to absorb too much water and become over-extracted, making the brewed Mandheling coffee bitter and astringent. Therefore, Front Street will adjust the grinding degree to be coarser and use water with a lower temperature for brewing.


Recommended brewing parameters: Water temperature: 87~88°C Coffee powder: 15 grams Powder to water ratio 1:15 Grinding degree: medium grinding (Chinese standard No. 20 sieve pass rate 70%)


The brewing method uses a three-stage water injection method. The three-stage water injection can better express the mellow taste of golden Mandheling coffee and the sweetness of caramel. In the first stage of steaming, 30ml of water is injected. This stage of water injection fully wets the coffee powder and exhausts it. In order to better extract the flavor of the coffee later, 100ml is injected in the second stage. This stage mainly flushes out the golden foam of Mandheling and raises the powder layer. In the last section, gently pour 95ml of water into the center. When all the coffee liquid has passed through, remove the filter cup and gently shake the coffee in the pot.


手冲


The ​Pour over​(V60) PWN Golden Mandheling coffee tastes very rich, exuding the aroma of spices and herbs. The overall taste is solid and mellow, with the sweetness of caramel and the flavor of chocolate and nuts.


Professional coffee knowledge exchange. For more coffee bean information, please follow Coffee Workshop (WeChat public account cafe_style)


For more specialty coffee beans, please add FrontStreet Coffee on private WeChat, WeChat ID: qjcoffeex


You can now buy the above coffee beans online at the Taobao store “FrontStreet Coffee” (前街咖啡). FrontStreet Coffee is a long-established specialty coffee roaster in Guangzhou, China, and its Guangzhou retail shop sells coffee beans only. The shop carries dozens of coffee beans from different origins around the world, including carefully selected single-origin beans for V60 pour-over and espresso. Guangzhou’s FrontStreet Coffee shop is recommended by many coffee lovers.

The FrontStreet 2013 Yunnan coffee beans sold in the store come from the Typica variety grown at FrontStreet Coffee’s own plantation in Yunnan. The name comes from the year the brand and the plantation were founded. You can buy these beans from China’s Yunnan origin at the Guangzhou shop and at FrontStreet’s Taobao store.

FrontStreet coffee beans are freshly roasted within 5 days and deliver consistently excellent quality and great value. Orders placed before 17:00 are shipped the same day, and most areas within Guangdong Province receive them the next day.

FrontStreet Coffee Taobao store: https://qianjiecoffee.taobao.com
Or search for “前街咖啡” (FrontStreet Coffee) on Taobao
Important Notice: FrontStreet Coffee has moved to a new address: 315, Donghua East Road, Guangzhou (coffee beans only)
Tel: 020 38364473

Subscribe to Front Street Updates

Be the first to know about new bean releases, brewing tips, promotions and cupping notes

Front Street Coffee WeChat QR code

Scan to Follow Front Street Coffee on WeChat

0