The scrambled eggs came in a carton, though they are cooked. Other eggs are more likely to be cooked onsite

Bacon is often pre-cooked and just warmed, though cooking fresh bacon still happens.

Toast is factory made bread, though the final toasting was done onsite. Most Americans have never had real bread.

The above is breakfast - the meal most likely to be made on site. Lunch and dinner are far worse.

[sigh]

I was about to argue this (because I'm bored!), but then I remembered an anecdote. My mother-in-law (typical rural Midwest small town ex-housewife) mentioned to me one day that the rolls that I made were delicious.

I was a bit confused because I hadn't made any rolls. I had baked a couple loaves of bread though. Didn't think much of it until an hour later I went into the kitchen and thought, "why the hell is the top of this loaf all picked at?"

Then I recalled the comment. I had made challah, a braided Jewish bread. She had never seen braided bread before and thought the braids were rolls all smushed together.