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
The air in any Indonesian city today carries a familiar, sweet, and comforting aroma. It’s the scent of coffee, milk,…
You pick up a beautiful bag of coffee. The brand name is bold, the design is stunning, and it promises…
The Specialty Coffee Association of Japan (SCAJ) is once again hosting one of the biggest coffee events in Asia. This…
World Barista Championship winners are decided every year by four judges across 15 minutes of espresso, milk, and signature drinks.…
Coffee roasting charge temperature is the drum temperature at the moment green beans go in, and it sets the thermal…
Rewritten and updated: August 13, 2026 Coffee has traveled thousands of kilometers and crossed centuries of trade, agriculture, migration, and…
Indonesia Coffee Production 2023 In 2023, Indonesia produced 758,730 Tons of Coffee. The country’s coffee production was heavily concentrated in…
The Anticipation of Gayo Harvest The harvest season in Gayo Highlands is coming soon. Right now, the coffee cherries are…
AA refers specifically to the size of the coffee beans, and this classification applies to both Arabica and Robusta. The…
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.
