Everybody here has an idea of why this occurs and they all mention packaging. Did you see inside a McDonalds kitchen? They use plastic trays to cook and hold f

Everybody here has an idea of why this occurs and they all mention packaging. Did you see inside a McDonalds kitchen? They use plastic trays to cook and hold foods instead of stainless steel we would see in high end restaurants. I am certain that food grade plastics leak into food at high heat when oils and other food compounds are present.