@hawkeye10,
I've just spent a short stint as a cook on a cattle station.
They kill an animal and you adjust your menu according to what's available, until the whole beast is gone.
Is that what you mean by the whole animal concept?
It shouldn't make more work for the chef though it prevents them from presenting mass produced meals.
About butter. This thread prompted me to buy some and risk a little pain. I can confirm that butter is blander than it was when I was a kid, since I haven't had much of it in between, to get gradually used to the change.