By MICHAEL HAEDERLE
Published: February 3, 2009
ALBUQUERQUE — For years Patricia Crown puzzled over the cylindrical clay jars found in the ruins at Chaco Canyon, the great complex of multistory masonry dwellings set amid the arid mesas of northwestern New Mexico. They were utterly unlike other pots and pitchers she had seen.
Some scholars believed that Chaco’s inhabitants, ancestors of the modern Pueblo people of the Southwest, had stretched skins across the cylinders and used them for drums, while others thought they held sacred objects.
But the answer is simpler, though no less intriguing, Ms. Crown asserts in a paper published Tuesday in The Proceedings of the National Academy of Sciences: the jars were used for drinking liquid chocolate. Her findings offer the first proof of chocolate use in North America north of the Mexican border. [read on]