New research strengthens the case that people used the chocolate ingredient cacao in South America 5,400 years ago, underscoring the seed’s radical transformation into today’s Twix bars and M&M candies.
Tests indicate traces of cacao on artifacts from an archaeological site in Ecuador, according to a study published Monday. That’s about 1,500 years older than cacao’s known domestication in Central America.
“It’s the earliest site now with domesticated cacao,” said Cameron McNeil of Lehman College in New York, who was not involved in the research.
The ancient South American civilization likely . . .
