Most of history most people have had almost no choice in what they ate at all and that was partly a matter of scarcity but it was partly also of these hierarchical cuisines. The church and or the state or the local land owner determined what you ate with religious rules with some tree laws with access to food stuffs. We are now so used to choice and it's not just the choice of whether we will have beef or chicken or lamb or pork I think another thing that we really need to take into account is that we can trace among dozens of different vectors of our food. That's something that is very recent I'm a historian very recent means for me the last two or three generations