Among ancient Mayas, cacao was not a food exclusive to the elite

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Said to be a gift from the gods, cacao for the ancient Maya was considered sacred, used not only as currency, but in special ceremonies and religious rituals. It’s the progenitor plant of chocolate, and notions of luxury are embedded in its lore.

The prevailing belief: Cacao was more available to, even controlled by, the society’s very upper echelons, royalty. Past efforts to identify cacao in ceramics focused on highly decorative vessels associated with elite ceremonial contexts — think ornate drinking vases — leading to assumptions about how cacao was distributed and who could access it.

What about the farmers who grew cacao and the communities of people who lived amongst these orchards? What of the general populace?

A new study by UC Santa Barbara researchers Anabel Ford and Mattanjah de Vries asks these questions — and answers them — by examining cacao residues from ancient ceramics. Their results, published in the Proceedings of the National Academy of Sciences, demonstrate that cacao was, in fact, accessible to the general populace and was used in celebrations at all levels of society.

Painted cylinder vase depicting a foaming drink in a vase and tamales in a plate [Credit: Justin Kerr, mayavase.com, Kerr number: 6418]

“It had long been assumed that cacao for the Maya was an elite exclusive,” said Ford, an anthropologist and director of the MesoAmerican Research Center at UC Santa Barbara, who for 40 years has been conducting research on the ancient Maya city of El Pilar. “We now know this is not the case. The imbibing of cacao was a luxury accessible to all. The importance is that it was a requirement of the rituals associated with it.”

To test the exclusivity of cacao use, the work examines 54 archaeological ceramic sherds. Originating from El Pilar — located between Belize and Guatemala — the sherds can be traced to Late Classic period civic and residential contexts, representing a cross section of ancient Maya inhabitants. The study includes a chemical analysis of these sherds — specifically of the biomarkers for cacao: caffeine, theobromine and theophylline.

“The discovery of chemical signatures of cacao made the investigation possible, but the main active ingredient, theobromine, it turns out is not sufficiently discrete to be certain of the cacao attribution,” said Ford. “Mattanjah (de Vries) and his students, in their chemical research, encountered the possibility of detecting theophylline, a specific component of cacao that could not be confused with anything else. His work was not archaeological, but he saw the potential for an interdisciplinary project.”

Archaeological ceramic sherds tracked back to the Late Classic Maya were analyzed for biomarkers of cacao [Credit: UC-Santa Barbara]

A distinguished professor and department chair of chemistry and biochemistry at UC Santa Barbara, de Vries has long been studying how DNA bases — the building blocks of life — and similar molecules respond to UV light and, he said, whether UV light “could have played a role on an early Earth, in the way nature selected those building blocks from a primordial soup of many such compounds.

“At some point I realized that some of the compounds we had been studying in this origin of life chemistry project occur in cacao, and thus can serve as biomarkers for cacao,” de Vries said. “Since we had already investigated the spectroscopy of these compounds in great detail, this presented an opportunity to apply that expertise to detection of these biomarkers for archaeology.

“We can find a needle in a haystack, provided we know what the needle looks like; in this case the target molecule was a certain biomarker for cacao,” he added. “That ability is what made this analysis possible.”

Mesoamerica and the Maya Lowlands with El Pilar at the ecotone between the interior and the Belize River, with other major civic centers indicated [Credit: MesoAmerican Research Center]

In their selection of ceramics to test, Ford and de Vries prioritized the vases from which cacao was likely drunk. They also tested bowls, jars and plates. All vessel types had evidence of cacao.

“This was a surprise at first,” Ford said, “but giving thought to the presence and understanding of their uses, bowls would be good for mixing, jars would be right for warming the drink (a traditional cacao preparation) and plates appropriate for serving food with sauces that can contain cacao (such as mole poblano).

“Now that we know that the presence of cacao is in all vessel types, we need to understand the greater distribution and use of these important household forms,” Ford added. “What is critical in our work is that the data I collected in the El Pilar — Belize River area emphasizes the ordinary households and not just the elite center. Our research thus breaks ground on the identification and the distribution.”

Author: Shelly Leachman | Source: University of California – Santa Barbara [September 26, 2022]

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