Lipid residue analysis has recently been applied to investigate the adoption of pottery by Early Woodland hunter-gatherers in north-eastern North America. Results, however, have proven contradictory, especially regarding the extent to which early ceramics were used for processing aquatic resources. Here, the authors argue that this inconsistency is due to the use of different analytical procedures and criteria for identifying aquatic organisms, rather than any actual variations in pottery use. By applying robust analytical criteria and methods to Early Woodland pottery from the Great Lakes region, the authors present evidence supporting their hypothesis that such pottery was indeed used for processing aquatic resources.

Why was pottery developed and adopted? Food residues on ceramic material from three sites in the Upper Great Lakes region of North America suggest that there is no single answer, and contradict previous indications that pottery was created for the ritual processing of fish oil. Samples from two sites showed evidence of both plant and animal remains, but no fish oils were detected, even for the site believed to be a fishing camp. Nut oils dominated for the third site, being present on both fire-cracked rocks and pottery, and were suggestive of an acorn-rendering process. All of the vessels were ideally suited to slow simmering, but it seems that their applications were diverse.