Eat at your own risk. Responses are according to what people have claimed on Twitter and Reddit .
Redditor Cozmo23 agreed:
The meat comes from hamburger patties that sat on the grill too long to serve to customers. They take them and put them in a bin and then throw them in the fridge. When the chili is made they take it out, boil it, chop it up, and dump them in the chili.
Panera - pasta; it's all microwaved, this includes Mac and cheese. Smoothies/frozen drinks- nasty base crap that smells and it's sticky.
Cupcakes/coffee cakes - all come frozen. best items are the real sandwich/salads. Real ingredients and usually fresh.