Nearly every step in the coffee-making process from plant to pour makes a difference in the flavor and caffeine content. Caffeine, in general, has been shown to have positive effects on alertness, focus, endurance, and memory, not to mention helping to stave off Alzheimer's and reducting liver cancer and heart disease. Of course, too much coffee can cause health issues (we're talking to those of your who are drinking half a dozen cups a day), in no small part because of the caffeine. But if you're having one or two cups, why not make them strong? Here, Kevin Sinnott, author of The Art and Craft of Coffee, guides us through how to control the caffeine in your cup while still getting great flavor.