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Chahan Yeretzian – On Water, Freshness, and Extraction

On May 21-23, 2015, the first CoLab in Prague took place – during 3 days baristas gathered in Prague to share ideas over coffee and food, discover the city and its bursting coffee scene, and to get inspired by talks and discussions. BGE worked together with Tamper Tantrum to bring 6 speakers to the stage. We’re very excited …

Coffee Plants for the Future: Update on the World Coffee Research Breeding Program

By Emma Sage, SCAA In late January of this year, World Coffee Research (WCR) gathered a group of coffee breeders and other interested parties to discuss the future of coffee cultivars in Central America. Representatives from WCR, SCAA, Anacafé, Promecafé, AGRITECH NST, CATIE, USAID, and CIRAD discussed the results of the WCR genetic diversity study, …

Ask Emma: What is hydrolysis?

Hi Emma, I keep hearing about this “hydrolysis” thing that happens during brewing, what is it? Can you explain the science behind hydrolysis? How is it different than extraction? Thanks, Brewed and confused in Baltimore *** Dear brewed and confused, I feel your pain! Brewing is one of the most complex yet under-researched topics in …

Decaffeination Processes: How do they make decaf coffee when the caffeine is in the bean?

Mental Floss recently posted a video answering a user-submitted question, “How do they make decaf coffee when the caffeine is in the bean?” Craig Benzine, “host/coffee connoisseur,” describes a method for decaffeinating coffee called “supercritical carbon dioxide decaffeination,” where green coffee beans are put in a pressure vessel and carbon dioxide is used as a …

Coffee Roasting Chemistry: Chlorogenic Acids

by Emma Sage, Coffee Science Manager, Specialty Coffee Association of America Chlorogenic Acids: Chemistry & Reality Coffee roasters and coffee-minded chemistry aficionados, myself included, often speak of chlorogenic acids (also known as caffeoylquinic acids or “CQAs”) in coffee. There may be hundreds of scientific studies published on these important constituents of coffee. However, what do we …

Atmospherics: Delivering More than a Cup

By Emma Sage Scientifically speaking, drinking a cup of coffee is what is called a multimodal sensory experience. This means that it’s the interaction of our five senses, and all the external factors influencing them (called “multisensory interactions”), which underlie our perception of flavor (Auvray and Spence 2008). There is also research (and lots of anecdotal …