How Many Levels of Coffee Roasting Are There? What Flavors Can Mandheling Coffee Unleash at Medium-Dark Roast?

How Many Levels of Coffee Roasting Are There? What Flavors Can Mandheling Unleash at Medium-Dark Roast?

Dark roasted beans take a lot of flak. Skeptics argue that oily, dark-roasted coffee uses carbonization to mask the flavor of defective beans—tire flavors, impurity tastes, rotting smells, earthy notes. So are dark roasts really worthless? Is dark or light roast "better"? The truth is that a bean's flavor is shaped by variety, growing conditions, processing method, and roast degree together—and roast degree largely determines the direction the flavor takes.

A Guide to Coffee Roast Levels

Roasting can be roughly divided into three tiers—light, medium, and medium-dark/dark—but the specialty trade recognizes eight canonical stages:

One: Light Roast | Two: Cinnamon Roast | Three: Medium Roast | Four: High Roast | Five: City Roast

Six: Full-City Roast | Seven: French Roast | Eight: Italian Roast

Medium-Dark and Dark Roast

Medium-dark roast spans the intense period from the end of first crack to the beginning of second crack, while dark roast begins at second crack. In practice, there isn't much difference in flavor direction between the two.

At this stage the roasting process is mostly complete, leaving only the products of terminal dry distillation. The dominant flavors are resinous, wine-like, and caramelized; bright acidity has all but disappeared, bitterness has increased, and the flavor has grown notably more mellow. If you want a cup with rich body and prominent chocolate and nut notes, medium-dark/dark roast is the best choice.

Two classic examples of what this roast level can do:

Mandheling: rich body with herbal plant aromas, more intense caramel sweetness, relatively elegant fruit acidity, and wild spice flavors.

Jamaica Blue Mountain: delicate acidity, very balanced body and aroma, a rich and smooth mouthfeel, and prominent chocolate sweetness.

Knowledge Point: The source of coffee's aroma and flavor is highly volatile. The longer coffee beans are stored, the more aroma and flavor they lose.

FrontStreet Coffee Recommendation

If medium-dark roast piques your interest, Mandheling from Sumatra is the variety to try—and understanding where it comes from explains its unmistakable character. Coffee arrived in Indonesia in the late 17th century when the Dutch planted seedlings on Java; after a devastating coffee leaf rust epidemic swept Java in the early 20th century, cultivation moved north to Sumatra, which now produces over 60% of Indonesia's Arabica and Robusta output. Mandheling coffee comes mainly from two high-altitude provinces: Aceh, home to the Gayo mountains near Lake Tawar, and North Sumatra, around Lake Toba and the traditional Lintong region. The island's tropical rainforest climate—humidity between 70-90% year-round, annual rainfall above 2,000 mm—makes African-style sun drying impractical, which is why Sumatra developed its own wet-hulled process: the parchment is mechanically stripped off while the beans are still half-dry, exposing the green bean to accelerate drying and to the air's native microflora, which creates that one-of-a-kind wild, earthy, herbal profile.

The benchmark expression is FrontStreet Coffee's PWN Golden Mandheling, produced by Indonesia's PWN company to famously strict standards: only beans above screen size 18 are selected, each 300 g green sample must contain fewer than 3 defective beans to meet the top G1 grade, and three rounds of manual sorting completely remove defects—yielding exceptional cleanliness and sweetness, with certificates and PWN-stamped bags to prove authenticity. For a more rustic experience, FrontStreet Coffee's Lintong Mandheling delivers that nature-mother flavor: strong and intense on the palate with clove and woody aromatics, low acidity, spice and mint notes, and a powerful, lasting sweetness. Both are roasted medium-dark to highlight dark chocolate and caramel while preserving Mandheling's wild herbal edge.

For brewing, FrontStreet Coffee recommends pour-over with 15 g of coffee at a 1:15 ratio, water at 87-88°C, a coarse-sugar grind, and a three-pour method: bloom with 30 ml of water to fully wet the grounds and degas, pour 100 ml to lift the bed and bring out the golden crema, then finish with a gentle 95 ml center pour to boost sweetness—yielding a thick, full body with caramel sweetness and chocolate and nut flavors. If you'd rather pull espresso, FrontStreet Coffee's classic blend adds medium-dark Mandheling to a Brazilian base of creamy nuttiness, with standout butter, roasted chestnut, and caramel notes plus a touch of Robusta for richer crema—perfect for latte art or a Dirty.