How to Distinguish Between Commercial and Specialty Coffee Beans from Colombia

The Excellence of Colombian Specialty Coffee at FrontStreet Coffee

Colombia occupies one of the most prominent spots on FrontStreet Coffee's bean list, with a lineup of specialty offerings that is unusually diverse—think Flower Moon Night, Rose Valley, Sakura, and Huilan, to name just a few. The reason Colombian specialty coffee stands out so decisively comes down to the country's environment being almost tailor-made for it: rugged, varied topography, low latitude, and high altitude. Set against Brazil, Colombia shows tremendous potential in the specialty coffee arena.

Colombian Coffee Classification

Colombian coffee is broadly divided into commercial-grade beans and specialty-grade beans. On the commercial side, the most famous names are the three "MAM" producing regions—Medellín, Armenia, and Manizales—whose signature profile is the familiar Central American style with pronounced fruity acidity. Meanwhile, Bucaramanga in the northeastern province of Santander is known for low acidity and a prominent bitter aroma, somewhat reminiscent of Indonesian Mandheling. (This is likely a consequence of the lower elevations in the area, which temper the coffee's acidity.)

Understanding Colombian Coffee Grading

For specialty coffee, bean size matters, but size alone does not equal flavor. Colombian grading is built around screen size rather than taste, so when you see the top grade "Supremo," don't assume it guarantees a great cup. All the label actually tells you is that 80% of the beans pass through a screen of 17 or larger—something with no direct bearing on flavor. That's why the specific producing region matters so much. Specialty lots from Colombia's southern growing regions will always list the province and the exact origin name. If that information is missing or buried, you're almost certainly looking at commercial coffee. To recap the grading: beans where 80% measure 17 screen or above are collectively labeled "Supremo," while everything below 17 screen falls under "Excelso."

FrontStreet Coffee Recommendation

For drinkers who love a bold, low-acid cup, FrontStreet Coffee's Indonesian Mandheling line is the natural companion to Colombian beans like Bucaramanga. Coffee reached Java with Dutch colonists in the late 17th century, then spread to Sumatra; after leaf rust devastated Java's coffee trees in the early 20th century, production shifted north, and today Sumatra grows more than 60% of Indonesia's Arabica and Robusta. Mandheling comes mainly from Aceh near Lake Tawar and the Lintong region around Lake Toba, where a distinctive local processing method—wet-hulling, or giling basah—developed because the rainy season overlaps with harvest. In this Sumatran process, the cherries are depulped and briefly washed, then dried only to a half-dry state before the parchment is mechanically stripped off, exposing the green beans to the air to speed up drying and to absorb the ambient microflora that gives Mandheling its wild, earthy, herbal intensity.

The pinnacle of this style is FrontStreet Coffee's PWN Golden Mandheling, produced by Indonesia's PWN company to exceptionally strict standards: only beans above an 18 screen size are used, and every 300g sample of green coffee must contain fewer than 3 defective beans to meet the top G1 grade, followed by three rounds of hand sorting. The result is remarkably clean, sweet, and full-bodied—though genuine PWN Golden Mandheling is mostly exported to Japan and the United States, so authentic lots are scarce. For espresso lovers, FrontStreet Coffee's classic blend adds medium-dark roasted Mandheling to a Brazilian base, layering butter, roasted chestnut, and caramel notes with a touch of Robusta for extra crema.

To brew Mandheling by hand, FrontStreet Coffee recommends a medium-dark roast, water at 87-88°C, 15g of coffee at a 1:15 ratio, and a coarse-granulated-sugar grind size, poured in three stages: first, 30ml to bloom and degas; second, 100ml to lift the crust and build the body; finally, a gentle 95ml center pour to draw out caramel sweetness, chocolate, and nuts over a thick, syrupy mouthfeel.