Yes! Yes! Yes! I cook from a variety of regions and have found some unusual correlations between where my ancestors were from and my food preferences. I need to study recipes better to perhaps pinpoint foods more specifically than just country, but I get your point. Just as an example, I like to mix yogurt in with my oatmeal instead of boiling water and found that that is a Scandinavian practice. When I had my DNA tested I came up with the surprise that my ethnicity included something like 13% Scandinavian. I even started a blog to collect all my recipes. I have a group of internet friends and every year we go on a "Cuisine Quest" where we virtually visit 6 countries and cook recipes from them. It is a great way to learn about different cooking methods and foods. It is really good fun.
One thing that bothers me, is that our food today is very different than even in our grandparent's time. Chicken is far plumper and less flavorful than years ago. So much of our food is raised for profit and not for health. I garden, and you would not believe the flavor difference between food I grow and food I buy.
Also, my sister and I looked at a website (which I can't remember, but am meaning to look up again) that suggested foods to eat and foods to avoid based on your DNA. I am pretty sure I was annoyed because everything I like is on the avoid list, but I'd like to have another look into it.
You remind me that I really am not making good use of Facebook. I should use it more for genealogy (and genealogy-related recipes!)