I have it on good authority that all food in the US is tainted with trace amounts of pork. Not enough to detect in a laboratory, but enough to deny one’s passage to heaven. Just sayin’.
I used to work for Dawn foods in Jackson Michigan. 1 day every month we ran a kosher shop and made kosher cake and bread mixes.
They basically managed the plant for that day. They watched us scrub the place clean and were there all day as the mixes were made according to their rules. (Never added any vials of palestinian blood)