Parshat Noach: "Clean" and "unclean" animals?!
"B'reishit/Genesis, chapter 7, verse 2: HaShem--yes, HaShem, not Elokim--tells Noach [Noah] to take seven of every clean beast (male and female), and two, male and female, of every unclean beast. Nu, exactly how is Noach supposed to know which animals are "clean" and which are "unclean" when that list isn't mentioned in the Torah for at least another book and a half?"
My theory: The concept of "clean" and "unclean" animals was widespread in ancient times, and preceded the laws of kashrut (Jewish dietary laws).
The concept of "clean" and "unclean" animals is widespread in contemporary times, as well. Not only do Muslims follow some of the laws of kashrut by not eating pig meat, but Hindus avoid cow meat and are vegetarian, and Seventh Day Adventists are also vegetarian.
My favorite "kashrut" story, though, involves my stay in France while I was studying for a B.A. in French. I always thought that the hamburgers in the university's cafeterias tasted odd, but I could never figure out why. It didn't occur to me until long after I'd returned to the U.S. that the hamburgers had probably been made of horse meat. Noch besser (better yet), the reason why that bothered me was not that Jews don't eat horse meat, which isn't kosher--I wasn't keeping even a remote semblance of kosher at the time--but because Americans don't eat horse meat! (We also don't eat dog meat, and generally don't eat snake or alligator meat, either.) Food traditions persist to this day, and they don't always have anything to do with religion.