Koro's summary, from the sources below
Sidikalang Robusta comes from Dairi Regency in North Sumatra and was registered as a geographical indication on 18 July 2019.
Its registration number is IDG000000078. DJKI's GI catalogue describes a cup that leans bitter with a slightly spicy aftertaste, low acidity, a full body and a nutty aroma; the same catalogue notes more caffeine and a stronger taste than arabica. Sidikalang is one of two robusta GIs in North Sumatra, alongside Simalungun Robusta. Dairi borders Pakpak Bharat, Samosir and Karo, so on this map Sidikalang neighbours three arabica GIs: Pakpak Simsim, Pulo Samosir and Tanah Karo.
Registered geographical indication · Robusta
Kopi Robusta Sidikalang memiliki rasa yang cenderung pahit dengan aftertaste agak spicy, ringan di mulut, dan tingkat keasamannya rendah. Hanya saja, kopi Sidikalang memiliki karakter yang lebih berat (full body) dengan aroma kacang-kacangan (nutty). Selain itu, kopi ini memiliki kadar kafeina yang lebih tinggi dan rasanya lebih strong dibandingkan arabika.