"Foods naturally rich in these substances include spinach, potatoes, beer, tomatoes, sauerkraut, bacon, cheese (not cottage), ham, sausage, and some other stuff like chicken liver and eggplant which you have no business eating anyway."
Why do I have no business eating spinach, potatoes, tomatoes, saurkraut, cheese, ham, sausage, chicken liver, and eggplant? What on earth is wrong with any of those foods? Or is that comment only directed toward the chicken liver and eggplant? Even if it is, why do I have no business eating that? Those all sound like pretty high quality foods to me, especially the saurkraut, spinach, tomatoes, and liver.