About the Author

Putra Siregar

Putra writes for Indonesia Specialty Coffee — origins, cupping, processing, and the trade behind every cup.

Putra Siregar leads coffee curation and content at Indonesia Specialty Coffee. He writes practical guides on green-coffee handling, roasting and brewing — from diagnosing defects like mold to dialing in espresso — helping roasters and coffee lovers get the most from Indonesian beans.

Role
Head of Sourcing
Articles
191 published
Coverage
Sumatra Sourcing
Read latest articles
Putra Siregar Putra Siregar
Insights & stories

Latest articles by Putra Siregar.

Arabica Sipirok: The Tapanuli Coffee Behind Sumatra’s Classic Cup
Articles

Arabica Sipirok: The Tapanuli Coffee Behind Sumatra’s Classic Cup

Pull the export records for “Sumatra Mandheling” over the last hundred years, and you are, in part, reading the trade…

27/08/2026Read
Arabica Puntang: The West Java Coffee That Won the World in 2016
Articles

Arabica Puntang: The West Java Coffee That Won the World in 2016

In April 2016, a coffee from a forest on a West Java mountain walked into a competition in Atlanta and…

20/08/2026Read
Timor Coffee (NTT): The Island That Gave the World Rust-Resistant Arabica
Articles

Timor Coffee (NTT): The Island That Gave the World Rust-Resistant Arabica

Some origins matter for how they taste. Timor matters for what it did to every other coffee. Timor coffee is…

14/08/2026Read
Java Malabar Coffee: West Java’s Original Volcano Arabica
Articles

Java Malabar Coffee: West Java’s Original Volcano Arabica

When someone calls coffee “a cup of Java,” this is roughly where the phrase was born. Java Malabar coffee is…

13/08/2026Read
Sulawesi Enrekang Coffee: The Home of Kalosi, and Its Move to Full-Washed
Articles

Sulawesi Enrekang Coffee: The Home of Kalosi, and Its Move to Full-Washed

If you have ever bought “Sulawesi Kalossi,” you have bought Enrekang coffee, whether the bag said so or not. Sulawesi…

12/08/2026Read
Papua Wamena Coffee: Indonesia’s Highest, Remotest Arabica from the Baliem Valley
Articles

Papua Wamena Coffee: Indonesia’s Highest, Remotest Arabica from the Baliem Valley

Most Indonesian coffee grows on a volcano. This one does not. Papua Wamena coffee is arabica grown in the Baliem…

11/08/2026Read
Minang Solok Coffee: West Sumatra’s Bright, Winey Answer to Earthy Sumatra
Articles

Minang Solok Coffee: West Sumatra’s Bright, Winey Answer to Earthy Sumatra

Everything you think you know about Sumatran coffee, Solok politely ignores. Minang Solok coffee is arabica grown in Solok Regency,…

10/08/2026Read
Bengkulu Coffee: Indonesia’s Underrated Robusta Giant and Its Highland Arabica
Articles

Bengkulu Coffee: Indonesia’s Underrated Robusta Giant and Its Highland Arabica

The British planted coffee here before there was Indonesia. Bengkulu was Bencoolen, an East India Company outpost on Sumatra’s west…

07/08/2026Read
Kerinci Coffee: Jambi’s Bright Arabica, Highland Robusta, and Jackfruit Liberica
Articles

Kerinci Coffee: Jambi’s Bright Arabica, Highland Robusta, and Jackfruit Liberica

Most Sumatra coffee tastes like Sumatra: heavy, earthy, low-acid, the taste of wet-hulling and humidity. Kerinci is the origin that…

07/08/2026Read
Putra Siregar
Profile summary

Putra Siregar

Head of Sourcing · Indonesia Specialty Coffee

Putra Siregar leads coffee curation and content at Indonesia Specialty Coffee. He writes practical guides on green-coffee handling, roasting and brewing — from diagnosing defects like mold to dialing in espresso — helping roasters and coffee lovers get the most from Indonesian…

191
Articles published
2023
Writing since
Aug 2026
Latest article
CuppingOriginsProcessingSourcingSensoryExport
Get in touch

Let’s talk about your specialty coffee needs.

Our cupping team is ready to build a profile around your brand — from single-origins for specialty cafés to consistent blends for export.