I used to make cheese sauces by melting a big brand cheddar cheese (like Cracker Barrel) into a white sauce. It worked really well, but a few months ago I noticed that the cheddar just wasn't melting like it used to. It had a waxy, granular texture. We're talking about something that's basically casein and fat here - I mean, what the hell are they adding to cheese that keeps it from melting right? This wasn't just a bad batch either. And it tastes weird too.
I've actually taken to using velveeta for cooking - the pinnacle of processed food - because it works better than "real" cheese. It actually melts, I mean, unlike whatever fillers they're putting in cheddar now. Major-brand cheese can't be used as an ingredient.
Recipes that call for sour cream and yogurt don't work right with this fake stuff either. These products are supposed to have milk fat in them, not gelatin or tapioca powder. It doesn't work the same way. Major-brand sour creams and yogurts can't be used as ingredients.
Oh, how about recipes that call for peanut butter? Because - get this - major food companies (like Kraft) extract all of the peanut oil from their peanut butter and replace it with vegetable oil. Because they're cheap, greedy, and evil. Major-brand peanut butter cannot be used as an ingredient.
Believe me, if they could find some way of more cheaply and reliably manufacturing food products I'm the first one on the bandwagon, but none of this garbage can actually be used for anything. It's being driven by pure, shameless greed.