No wonder the unenlightened still drink Folgers

I have often preached that Robusta beans, which grow at lower altitudes and mature more quickly, have higher caffeine content than their more sophisticated cousins, the Arabica bean. But I never knew how much of a difference we were talking about here. Till I read an interesting article in Roast Magazine. The caffeine content of Arabica beans (the type sold by Phoenix Coffee and most specialty roasters) is anywhere from .58 to 1.89% caffeine by weight. Robustas, by contrast, contain anywhere from 1.16 to 4.0% caffeine by weight. That's a big difference! No wonder people are still drinking Maxwell House and Folgers.