Trouble Brewing At The Coffee Bar

Over the past few years, millions of Americans have become addicted to novel forms of coffee: such concoctions as a $2.20 double tall latte--two shots of espresso drowned in steamed milk. And many who once bought cans of Folger's or Maxwell House are buying beans with such names as Colombian Supremo or Irish Cream, selling for up to $8 a pound.

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