DEERFIELD, IL—Upper-middle-class homemaker Irene Risser expressed fear Monday that there exists a gourmet coffee superior to the brands she currently buys. "I have Kona Coffee's peaberry flavor, which is really terrific, and I also like to buy Sumatran Rainforest," Risser said. "But I still worry that somewhere out there, someone has better, more expensive coffee than I do." Risser then went on the Internet to search for $25-a-pound breakfast blends.

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