Coffee Discovery

The Art of Aging Coffee

How time, climate, and careful stewardship transform select Sumatran coffees into something truly unique.
Coffee Discovery
A close-up view of stacked natural burlap coffee sacks filled with goods, each marked with a small white paper label and handwritten numbers.

Why Age Coffee?

Most green coffee is considered to be at its peak flavor shortly after harvest. As they age, flavors typically fade and lose complexity. But certain coffees from Indonesia, particularly Sumatra, follow a different path. Instead of becoming dull over time, they develop deeper, richer, and more nuanced flavors.

This unusual characteristic has made aged Sumatran coffees a cherished part of Starbucks coffee heritage for decades. Their distinctive flavor profile is so unique that they continue to play an important role in some of Starbucks most iconic blends, such as Christmas Blend.

Close-up of clusters of red coffee cherries hanging from branches among green leaves in a sunlit outdoor setting.Close-up of clusters of red coffee cherries hanging from branches among green leaves in a sunlit outdoor setting.
Three roasted coffee beans arranged diagonally on a textured beige surface with dramatic, warm sunlight and soft shadows.Three roasted coffee beans arranged diagonally on a textured beige surface with dramatic, warm sunlight and soft shadows.

A Tradition Inspired by History

The practice of aging coffee traces its roots to the early coffee trade. Centuries ago, coffee traveling from Indonesia to Europe spent months, and sometimes years, aboard sailing ships. Exposure to heat, humidity, and time transformed the coffee, creating flavors that were noticeably different from freshly harvested beans.

What began as an accidental discovery eventually became a deliberate craft. Today, Starbucks honors this tradition by intentionally aging select lots of Sumatra coffee, recreating the remarkable flavor transformation that early coffee traders observed centuries ago.

How the Aging Process Works

The journey begins with carefully selected Sumatran coffees sourced at their peak. Rather than being roasted immediately, the green coffee is transported to a dedicated aging facility in Singapore. There, warm tropical air circulates through stacks of burlap bags, creating an ideal environment for aging.

Over the course of three to five years, each lot is carefully managed. Bags are rotated, turned, and repositioned regularly to promote consistent aging, while Starbucks Coffee Quality and Development teams evaluate samples annually to monitor flavor development.

Much like tasting wine from a barrel as it matures, coffee developers continually assess each lot, waiting for it to reach its ideal expression before it moves on to roasting.

A close-up stack of folded natural brown jute or burlap fabric sheets tied together with a string, showing the coarse woven texture.A close-up stack of folded natural brown jute or burlap fabric sheets tied together with a string, showing the coarse woven texture.
A close-up stack of natural brown burlap sacks with purple woven stripes, tightly folded and stacked together.A close-up stack of natural brown burlap sacks with purple woven stripes, tightly folded and stacked together.

How Time Changes Flavor

As coffee ages, its internal composition gradually changes. Acidity softens, body deepens, and flavors evolve in ways that cannot be achieved through origin or roast alone.

With Sumatra, herbal and earthy characteristics become more layered and expressive, developing complex notes that can include spice, oak, vanilla, cedar, tobacco, toasted marshmallow, and other warm, wood-forward flavors.

This transformation is what makes Starbucks Reserve Aged Sumatra so distinctive. The coffee captures the influence of time itself, showcasing how patience, expertise, and the right environment can create a flavor experience unlike any other.

Starbucks Reserve<sup aria-hidden='true'>®</sup> Aged Sumatra

Starbucks Reserve Aged Sumatra

Online Exclusive

Starbucks Reserve Aged Sumatra

Toasted MarshmallowWarm Baking Spices

$19.00
$19.00

Bold and expressive—a limited release coffee that honors a Starbucks tradition.

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A Coffee Worth Waiting For

Creating aged coffee is an investment in every sense of the word. Years of storage, ongoing care, and continuous tasting are required before a coffee is finally ready to roast. The result is a cup that reflects one of coffee's most fascinating transformations and celebrates a tradition that continues to inspire Starbucks coffee developers today.

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