Neanderthals Operated a “Fat Factory” for Bone and Grease Processing.

Almost 100,000 years ago, Neanderthals processed animal bones to extract fat, a practice that was also seen in modern humans around 125,000 years ago.

This discovery stems from a remarkable lakeside site in Neumark Nod, eastern East Germany, where over 100,000 bone fragments from at least 172 individual animals were uncovered, including horses, dogs, deer, foxes, large cats, and extinct twin rhinoceroses.

The bones exhibited clear signs of having been crushed into small pieces and heated to release the fat contained within the spongy tissues. This fat could have served as a rich source of high-calorie nutrition for hunter-gatherer groups.

Will Roebroeks and his team at Leiden University in the Netherlands described the site as a “fat factory” suggesting it was intensively used for a short period. “The fragmentation of the bones is distinctly artificial and not a result of natural predation or geological forces,” he states.

While there is no direct evidence of butchery by Neanderthals, they were the primary known human species in Europe at that time, Roebroeks points out.

Previously, the earliest evidence for grease rendering was located in Portugal, dating back only 28,000 years.

The labor-intensive process of breaking down large mammal bones into such tiny fragments only makes sense if it serves a purpose, Roebroeks notes.

The team lacks direct evidence of boiling; however, it is evident that the bones were heated. “Given the clearly heated bones, heated flint tools, and the presence of stones, it indicates that fire was utilized at the site,” he explains.

Since the earliest known pottery dates back around 20,000 years, the Neanderthals likely used other types of containers to boil the bones. Recent experiments indicate that containers made from materials like deer hides and birch bark can be placed directly over the fire, allowing sufficient water to heat up for cooking, according to Roebroeks.

“This adds yet another layer to the complex cultural practices of our distant relatives, suggesting that these hunter-gatherers may have engaged in forms of food preservation,” he concludes.