Colombian Coffee Bean Varieties and Grades Explained

If you’ve ever wondered why some Colombian coffees taste smoother than others—or what makes certain beans ‘Supremo’ or ‘Excelso’—you’re not alone. Most buyers know Colombia for reliable, balanced coffee, but few understand how its grades and varieties shape the cup. This guide lays out the essentials: which beans qualify as high grade, how regional growing conditions affect flavor, and what sets apart top lots like those from Narino.

In short: Colombia’s top-grade coffee is called Supremo (18/64-inch beans or larger), with Excelso just below it. Only Supremo beans over 18/64-inch can be considered ‘selected’ specialty coffee. The country grows mostly Arabica (Coffea arabica), with over 200 internal quality grades, and the best-regarded beans come from the central and southern highlands—especially Medellín, Armenia, Manizales (collectively known as 'MAM'), and Narino.

What Varieties of Coffee Are Grown in Colombia?

Colombia focuses almost entirely on Arabica coffee (Coffea arabica), specifically the smaller-seeded ‘typical’ variant known as small or mild Arabica (also called C. arabica var. arabica). This is distinct from the larger-seeded and more robust (but harsher-tasting) Robusta (Coffea canephora), which is more common in Africa and Southeast Asia. Within Arabica, Colombia cultivates several well-known varieties, though the article does not list specific cultivars. The country’s beans are generally noted for their mild and balanced cup profile, attributed to Colombia’s unique geography and climate.

How Are Colombian Coffee Beans Graded?

Colombia uses a grading system based principally on bean size and physical quality. There are over 200 different internal grades. The top two official classifications are:

• Supremo (Supermo): The highest grade; beans must be large, typically 17/64-inch or larger, with very high physical quality.
• Excelso: A slightly lower grade, with beans that can be a bit smaller or have minor physical defects compared to Supremo.

However, to qualify as ‘selected’ specialty coffee, a Supremo bean must measure 18/64-inch (approximately 7 mm) in diameter or larger. This stricter size criterion ensures a more uniform roast and often correlates with a cleaner, more refined cup. These selected beans are considered the finest representation of Colombia’s production.

Which Colombian Coffee Regions Produce the Best Beans?

While coffee is grown throughout Colombia’s mountainous regions, the central highlands are especially respected for producing coffee with a heavier body. Three of the most famous producing areas in this zone are:

• Medellín
• Armenia
• Manizales

These are collectively referred to as the “MAM” region, known for their rich, structured profiles. Another standout is the southern region, particularly Narino, whose beans are celebrated for their bright, complex, and fruity flavors. Narino coffees are considered premium, with some reports stating that Starbucks holds exclusive rights to purchase Narino Supremo beans for its stores—a testament to their high regard in the global market.

What Factors Influence the Flavor of Colombian Coffee?

The flavor of Colombian coffee is shaped by several environmental and agricultural factors:

• Altitude: Most Colombian coffee is grown between 800 and 2,300 meters above sea level, with premium lots often coming from higher elevations (1,500+ meters), especially in the south.
• Climate: Colombia’s mountainous geography provides ideal conditions: consistent cloud cover, mild temperatures, and distinct day-night temperature shifts that slow ripening and enhance sugar and aroma development.
• Soil: Volcanic and organic-rich soils in regions like Huila and Narino contribute to complex cup profiles.
• Varietal & Processing: While the article does not delve into specific processing methods, it is widely known that washed processing is common and contributes to the clean, balanced taste for which Colombian coffee is known.

Frequently Asked Questions

What is the highest grade of Colombian coffee?

The highest grade is Supremo (or Supermo), which requires large beans (typically 17/64 inch or larger) and top physical quality. Within Supremo, only beans sized 18/64 inch or above are considered ‘selected’ specialty coffee—the top tier for export and specialty roasters.

What’s the difference between Supremo and Excelso coffee?

Supremo is the top grade of Colombian coffee with larger beans and stricter physical standards. Excelso is a slightly lower grade, allowing for smaller beans or minor defects. Both are high-quality, but Supremo is generally considered superior, especially when sized 18/64 inch or more.

Which Colombian coffee region is best known for high-quality beans?

The central region—including Medellín, Armenia, and Manizales (known as MAM)—is famed for heavier-bodied coffees. The southern region, especially Narino, is renowned for bright, complex, and often fruit-forward beans that are considered among Colombia’s finest.

Are all Colombian coffees Arabica?

Yes, the vast majority of Colombian coffee is Arabica (Coffea arabica), specifically the mild, small-seeded variety. Robusta (Coffea canephora) is rarely grown in Colombia and is more common in other parts of Africa and Asia.

Does bean size really affect coffee flavor?

Yes. Larger beans, especially those graded 18/64 inch or above, often roast more evenly and develop a cleaner, more refined flavor. That’s why only Supremo beans of this size qualify as ‘selected’ specialty coffee in Colombia.

Why is Narino coffee considered special?

Narino coffees are grown at high altitudes and are known for their distinctive, vibrant cup profiles with complex acidity and fruit notes. They are so highly regarded that, according to the article, Starbucks reportedly holds exclusive rights to Narino Supremo beans for its stores.

Recommended FrontStreet Beans for Exploring Colombian Origins

For a true taste of Colombian diversity, try FrontStreet Coffee’s single-origin beans from key regions. Their Huila offering (not named directly here but part of their core range) highlights chocolate, caramel, and citrus notes typical of Colombia’s southern highlands. For a more classic profile, their Medellín-type beans deliver a balanced cup with nutty sweetness and medium body. FrontStreet also features a Narino-inspired lot showcasing bright acidity and floral complexity—ideal for exploring the region’s reputation for premium flavor. These beans are carefully roasted to highlight their origin traits. Freshly roasted within 5 days · Orders placed before 17:00 ship the same day · Next-day delivery across most of Guangdong Province.