My son was studying words for an English quiz, and atavistic was among them. I said, "So, here's an example: when I have to make dinner, the first thing I think about is pasta. That's an atavistic response." Pasta is my default setting, it's what we had growing up about 5 times a week, including soup and first courses of things like pasta with peas, pasta with cici, pasta fagioli, spaghetti and meatballs, ravioli, lasagna, etc., etc.
What's your atavistic cooking response? Do you turn to a meal that was one you grew up with more often than not?