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.
Putra Siregar
Indonesia Specialty Coffee is exhibiting at SCAJ 2026, the World Specialty Coffee Conference and Exhibition at Tokyo Big Sight, from…
Most coffee regions start with someone wanting to grow coffee. Wonosobo did not. On the steep slopes below Dieng and…
There is a good chance you have already drunk South Sumatra robusta this week without knowing it. This one province…
Ask around Temanggung, and the coffee is rarely the main character. This is Indonesia’s tobacco heartland, and coffee grows in…
Hand a roaster a cup of washed Arabica Rinjani without telling them where it came from, and most will not…
We cup every lot that leaves our warehouse in Medan, which means we also roast every lot first, on a…
Pull the export records for “Sumatra Mandheling” over the last hundred years, and you are, in part, reading the trade…
In April 2016, a coffee from a forest on a West Java mountain walked into a competition in Atlanta and…
Some origins matter for how they taste. Timor matters for what it did to every other coffee. Timor coffee is…
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…
Our cupping team is ready to build a profile around your brand — from single-origins for specialty cafés to consistent blends for export.
