This was many moons ago, when I was still in high school and working at at a McDonalds. As luck would have it, it happened to be in a very posh area and by a major commuting arterie, and was one of the nicest ones in the country as it was told to me by people that visit mcDs all over the country.
I was front counter, or front window drive thru because I didn't screw up on the computer, could speak English well, could count money, and pretty. Maybe pretty wasn't my strongest suit as a teenager, but it's my damn story so screw it, I was pretty.
One day the guy working the grill (don't remember his name, but it was a guy, they were all guys, never saw a female in the grill area,,,) called me over to look at his meat, which I just glared at him sideways till he pointed at the grill. It was an odd color, sort of a happy grey, versus its normal sad grey till it turned brown.
He did another batch, all the same. I tried to get closer but sizzling meat isn't friendly to get tooo close to, and smelling it didn't work as the exhaust hood sucked like a tornado that just made eye contact with a mobile home park.
We shrugged and went on with our day. Next day, more of the same. We wondered if it was just part of the manufacturing process and some sort of glazing.
Next week still more. At this point we were over it and figured that's just what it was. Till a new shipment came in, which gets stacked on the old stuff. Normal grey. Huh. Weird.
The next week we don't get down to the bottom two cases again before getting more inventory, again stacked on top. This goes on for a month or so. Then there was some big holiday weekend and we had mad sales, manager is worried we will run out of patties, we pull the second to last case, and sure enough it's slightly yellow. Whatever.
The next day, I'm there for breakfast shift ( making the fucking biscuits at many hours before dawn sucks, if it wasn't a one time fill in I would have quit right there) and into the beginning of lunch. The guy on grill yells from the back, he needs a hand, the bottom case is stuck in the walk in freezer. Ok, who know how long it's been there, I give him a hand to help pull on it.
It cracks loose there is clearly something that has spilled in the walk in and froze. Crap. Get the manager.
Explain the whole story, meanwhile people are bitching because hamburger delay so the grill guy cracks the case and starts cooking them, manager freaking because who knows what chemical that is, but the delivery truck isn't here and people are flipping their shit over the delay and saying there is no more hamburgers means he's fired.
Grill guy gets a rack done and out, manager and I are in the walk in and he grabs a piece of the ice, which starts melting in his hand.
Manager turns white, deliver truck shows up, grill guy is cooking like a madman. Manager runs to get new case from the delivery truck. Throws the old case in the dumpster and shoots me an evil stare of 'this never happened'.
Turns out some guy who quit a month ago was pissing on the meat for like a week before he quit, a story I got months later from him.
That my friends, is the story of the yellow meat.