Nope, they actually make sure to use real ingredients to make them, they're just prepared especially good for photoshoots. I've even heard of some places using a blowtorch to make sure they get the exact right colour to be photographed. That way they can make the excuse that it looks like that because it was wrapped up in a bag, not because they've been slapped together in about 10 seconds because there's another 300 people to serve that hour.