The Chemistry of Great Coffee

Red ripe coffee beans are sorted on a coffee plantation near Poas, Costa Rica in this file photo. (AP Photo/Kent Gilbert)

High-end coffee is suddenly seeping into fast-food restaurants faster than you can ask for fries with that.

McDonald's started offering organic coffee roasted by Green Mountain Coffee Roasters at 650 locations in New England and Albany, New York, this month. Burger King now lets you order coffee brewed one cup at a time, so you avoid that burnt taste.

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Robin Lloyd

Robin Lloyd was a senior editor at Space.com and Live Science from 2007 to 2009. She holds a B.A. degree in sociology from Smith College and a Ph.D. and M.A. degree in sociology from the University of California at Santa Barbara. She is currently a freelance science writer based in New York City and a contributing editor at Scientific American, as well as an adjunct professor at New York University's Science, Health and Environmental Reporting Program.