Tolong jelaskan mengenai Caliak pulo dari Kopi dalam bahasa minangkabau

Coffee and caffeine health information — A collection of peer-reviewed and journal-published studies on coffee health benefits is evaluated, cited, and summarized.

Benjamin Joffe-Walt and Oliver Burkeman, The Guardian, 16 September 2005, "Coffee trail" — from the Ethiopian village of Choche to a London coffee shop.

Coffee on a Grande Scale  — Article about the biology, chemistry, and physics of coffee production.

This is Coffee — Short tribute to coffee in the form of a documentary film (1961), made by the Coffee Brewing Institute. The movie includes some dos and don'ts of making "the perfect cup of coffee" and an overview of different ways to enjoy coffee throughout the world.

An Illustrated Coffee Guide  — Side-by-side diagrams of a few common espresso drinks.

Descriptors for Coffee (Coffea spp. and Psilanthus spp.)