Humans and chocolate: a 5,000-year love story

Cacao pods used today to produce chocolate have been gathered by humans for more than 5000 years, scientists say (AFP pic)

AFP Relaxnews

Humans have hankered after chocolate for centuries longer than previously thought, scientists said Monday, tracing the earliest known consumption of its key ingredient to more than 5,000 years ago in South America.

Archaeologists have long believed that ancient civilisations in Central America started drinking concoctions of cacao — the bean-like seeds from which cocoa and chocolate are made — from around 3,900 years ago.

But in a study that shifts the origins of chocolate centuries backwards, a team of scientists travelled to Santa Ana-La Florida, in modern day Ecuador, the earliest known archaeological site of the Mayo-Chinchipe civilisation.

They analysed artefacts from tombs and ceremonial pyres including ceramic bowls, jars and bottles as well as stone bowls and mortars for theobromine, a bitter chemical found in cacao.

The team found starch grains characteristic of cacao in around a third of items examined, including the charred residue of a ceramic receptacle dated to be 5,450 years old.

That suggests that humans have been consuming cacao for roughly 1,500 years longer than previously thought, and locates its discovery in the upper Amazon region.

“This is the oldest trace of cacao identified so far and it’s also the only archeological trace of the use of cacao discovered in South America,” Claire Lanaud, geneticist at the French Agricultural Research Centre for International Development and the study’s co-author, told AFP.

Unlike the sugar and fat-laden creations of chocolatiers today, cacao drinks were prized for their medicinal value and often served during religious ceremonies.

Cacao was also a key trading commodity and its seeds were even used as payment and as currency in some parts of Central America.

“Since these ceramic vessels are found in ceremonial locations, including as offerings in tombs, it is likely that cacao was an important component of ritually significant drinks,” said Michael Blake, from the University of British Columbia’s Department of Anthropology.

Part of human history

“There is a great deal of evidence that cacao was very important to peoples in northeast Peru, northwest Brazil and south Colombia and more,” he told reporters.

“The medicinal uses are well documented and there are some accounts of people making fermented beverages from the sweet pulp.”

Last week research by a US-based team found evidence that cacao trees have been cultivated by humans for at least 3,600 years.

Blake said the findings of his team’s study — published in the journal Nature Ecology & Evolution — could be of use to botanists today trying to understand how cacao can adapt to our changing climate and receding rain forests.

“As a major crop today, used by most of the world’s population for an enormous variety of purposes, cacao is of great interest to humanity,” he said.

“It is a major part of our human story, one intimately linked to the history and ongoing cultures of indigenous south and central Americans where cacao is still grown and used today.”


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Lifestyle News: Humans and chocolate: a 5,000-year love story
Humans and chocolate: a 5,000-year love story
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