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
Drive up from Medan toward Berastagi, and the coffee starts about where the vegetable fields stop. A lot of it…
In 2025 a single 20-kilogram lot of washed Geisha from one farm in Panama sold at auction for $30,204 per…
Open a bag of Liberica next to a bag of Arabica, and you can tell them apart with your eyes…
Thermal shock coffee processing is a controlled fermentation technique that alternates hot and cold water baths on the coffee cherry…
Toraja Sapan built its reputation on one thing: heavy, earthy body. That reputation is only half the story, and the…
Robusta Temanggung is robusta grown on the volcanic slopes between Mount Sindoro and Mount Sumbing in Central Java, usually at…
Enzymatic Kopi Luwak is civet coffee produced without a civet. Indonesian producer Rani Mayasari, working with Prof. Erliza Noor at…
When a Japanese importer opens a bag of Indonesian green coffee, they are trusting a promise: that the beans inside…
On the cupping table in front of me right now, there are five bowls from the same offer sample. 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.
