The scientists were able to determine that chimps have the patience and foresight required for cooking, even if they were not the ones actually doing the cooking.
Researchers discovered this by getting the chimps to relinquish a raw piece of sweet potato for the prospect of a cooked piece a short time later, according to a report of the study by the New York Times.
Chimps have already shown a preference for cooked foods over raw foods, but the study found they were also willing to wait for cooked foods, something that many humans – including this reporter – often struggle to do.
Scientists did not give the chimps access to real cooking devices, one reason being that the species has not figured out how to use fire. Instead, researchers created a cooking simulation that used two plastic bowls that fit closely together with pre-cooked food in the bottom bowl.
When a chimp put a raw piece of sweet potato in the top tub, the researched would “cook” the piece by shaking the bowls and would remove the top bowl to reveal the cooked sweet potato.
Once the chimps realised they could get cooked food by placing the raw food into the “oven”, they would resist eating raw food. The chimps still would “cook” the food even if they had to walk across the cage to do so and continued to do so with different types of food.
This experiment was launched from the idea that the mastery of fire and learning to cook is what propelled human evolution from earlier primates.
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