Am example of how cooking helped us become human is not only an evolutionary aspect but also socially.
"Our ancestors most probably dropped food in fire accidently. They would have found it was delicious and that set us off on a whole new direction."
Erectus also had a similar body shape to us. Shorter arms and longer legs appeared, and gone was the large vegetable-processing gut, meaning that Erectus could not only walk upright, but could also run.