© Peabody Museum of Archeology and Ethnology/Harvard University
Chocolate by the bowlful. - These pottery bowls from the American Southwest show traces of several compounds in chocolate.
They were humble farmers who grew corn and dwelt in subterranean pit houses. But the people who lived 1200 years ago in a Utah village known as Site 13, near Canyonlands National Park in Utah, seem to have had at least one indulgence: chocolate.
Researchers report that half a dozen bowls excavated from the area contain traces of chocolate, the earliest known in North America. The finding implies that by the end of the 8th century C.E., cacao beans, which grow only in the tropics, were being imported to Utah from orchards thousands of kilometers away.
The discovery could force archaeologists to rethink the widely held view that the early people of the northern Southwest, who would go on to build enormous masonry "great houses" at New Mexico's Chaco Canyon and create fine pottery, had little interaction with their neighbors in Mesoamerica. Other scientists are intrigued by the new claim, but also skeptical.
The new research is "exciting, no doubt. ... Archaeologists have been looking for Mesoamerican connections to the Southwest for 100 years," says Robert Hard of the University of Texas, San Antonio, who specializes in the archaeology of the Southwest and was not involved in the new study. But, he says, "I'm not convinced this is chocolate."
The findings stem from collaboration between Dorothy Washburn, an archaeologist at the University of Pennsylvania's University Museum of Archaeology and Anthropology in Philadelphia, and her husband William Washburn, a chemist at Bristol-Myers Squibb in Princeton, New Jersey. In an earlier study, they detected evidence of cacao in pottery from 11th century burial sites in New Mexico's Chaco Canyon and in vessels from other Southwestern sites. As a follow-up, the scientists tested bowls excavated in the 1930s from Site 13, which dates to roughly 770 C.E.