Introduction:Mandheling is often mistakenly thought to have only a strong, bitter taste. However, by mastering the correct roasting stage, grind size, and pouring rhythm, you can highlight its rich, sweet Sumatran characteristics. This article details the bean variety traits of Mandheling, the advantages of medium-dark roasting, and provides a practical three-stage pour-over method, including coffee-to-water ratio, water temperature control, and resting advice, so you can easily brew a classic Mandheling that is smooth and non-astringent, with aromas of dark chocolate and caramel.

Many coffee beginners, when trying Mandheling for the first time with a pour-over, often encounter a cup that is solely bitter and astringent, or even experience a burning sensation in the throat. In reality, this classic coffee bean from Sumatra, when its characteristics are understood and the right extraction conditions are adjusted, can showcase rich herbal notes, a full body, and a delightful aftertaste, rather than a monotonous burnt bitterness.

To brew Mandheling well, you first need to understand its bean variety background and roasting characteristics. The Mandheling commonly found on the market is mostly grown in the Lintong region of Sumatra, with varieties primarily being Timtim (Timor) and Ateng (Catimor, a hybrid of Caturra and Timor). These varieties, due to having some Robusta lineage, are naturally disease-resistant and suited to Indonesia’s hot and humid environment, but they also tend to have flavors that are low in acidity, full-bodied, and grounded in herbal, spicy, and dark chocolate notes.

In addition, Mandheling is usually medium-dark roasted, with the aim of bringing out a rich and full-bodied taste while avoiding excessive charring that can produce harsh bitterness. The ideal roast should be finished just before the second crack, at which point the beans release the most balanced flavor compounds—offering sufficient body without unpleasant astringency or smokiness. It’s worth noting that medium-dark roasted beans will develop an oily sheen on their surface 3 to 4 days after roasting, due to the release of a large amount of carbon dioxide and oils; this is a normal phenomenon.

So, how can you avoid brewing Mandheling that tastes only bitter through pour-over techniques? First,fresh roasting and proper resting are key. It is recommended to start brewing with coffee beans roasted 4 to 7 days prior, when the beans enter a stable period of flavor release and can present the most complete aroma and taste profile. Once coffee beans are ground into powder, the rate of flavor volatilization increases significantly, so it is advised to grind just before brewing and minimize the time between grinding and pouring water.

In terms of grind size, because Mandheling is medium-dark roasted, the beans have a looser structure and faster water absorption, soit is recommended to use a slightly coarser grind than for light roasts, with about 70% passing through a #20 sieve being ideal. Too fine a grind can lead to over-extraction, resulting in burnt bitterness and astringency; too coarse may under-extract, making the coffee taste watery and lacking in complexity.

The water temperature is recommended to be set at 87 to 88°C . A temperature that is too high can extract impurities and over-extracted substances from medium-dark roasted beans, causing bitterness and a smoky taste; whereas a temperature that is too low may make the coffee flavors seem flat, failing to showcase the rich base that Mandheling should have.

The recommended coffee-to-water ratio is 1:15, for example, 15 grams of coffee grounds to 225 grams of water. This ratio allows the full body and sweetness of Mandheling to shine through without being overly intense. If you prefer a more concentrated taste, you can adjust slightly to 1:14, but it is still recommended that beginners start with 1:15 to get familiar with the flavor profile.

The three-stage pouring method is highly recommended, as it allows for more effective control of the extraction rhythm and highlights the layers and sweetness of Mandheling. The specific steps are as follows:

The first stage is the bloom, where about 30 milliliters of water are poured to evenly wet all the coffee grounds. Let it sit for about 30 seconds to allow the coffee grounds to degas, which helps facilitate the smooth release of flavor compounds afterward;
The second stage involves pouring about 100 milliliters of water, mainly extracting the mid-palate flavors of the coffee. At this point, you may observe golden foam appearing on the surface of the coffee bed;
The third stage then uses 95 milliliters of water poured gently in the center to slowly complete the extraction, with the total brew time controlled at around 2 minutes and 10 seconds. Wait until all the water has dripped through before removing the filter, ensuring the flavors are fully extracted without unnecessary prolonging.

Through the above parameter adjustments and careful operation, you will be able to brew a cup of Mandheling with a rich flavor profile: the entrance reveals intense herbal and spicy notes, the mid-palate showcases the sweetness of dark chocolate and caramel, and the finish is round with a lasting, mellow aftertaste. It completely breaks away from the stereotype of being merely 'bitter' and allows you to truly appreciate the unique charm of Sumatran coffee.

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