TIL that in 2020, Burger King ran an advertising campaign featuring a picture of a moldy Whopper, to prove that their burgers are made without preservatives. This unconventional advertising method worked, increasing sales by 14% (according to multiple sources.)
^Best answer. I majored very well in chemistry, a tiny bit less well in career, but this is the “cis” vs. “trans” explanation I was hoping to see.