Don't need to go that far back, only five years for the gutter oil (the most famous of many in the area) phenomena to make the news. https://www.theatlantic.com

Don't need to go that far back, only five years for the gutter oil (the most famous of many in the area) phenomena to make the news. https://www.theatlantic.com/china/archive/2013/10/chinas-frightening-unpleasant-cooking-oil-scandal/281000/ https://www.theatlantic.com/china/archive/2013/10/chinas-fri...