I like reading about origin of recipes and how they came to be and the continuously evolving nature.
Recently watched a Japanese variety show on using shelf stable bags of pasta sauce loved by many in Japan. They took five different varieties to Italy using their pasta and asked them to rate them in five different regions of Italy from north to south.
One pasta sauce was dinged the most and it was carbonara. People in Italy complained that guanciale was not used and instead pancetta or thick bacon was used. Without guanciale it is not carbonara and I have heard this for years. But.....
But recently I find that first recipe for carbonara was published in 1952 in the US. That this was actually created for American servicemen stationed in Italy after the WWII by Italians to use great American guality bacon, powdered eggs brought by Americans and pasta and the Americans stationed there used to call it breakfast spaghetti due to bacon and eggs. There are lots of sites talking about this for example:
https://en.wikipedia.org/wiki/Carbonara
https://www.bbc.com/trav...-pasta-causing-a-dispute
I am not surprised at all since beloved spam transformed some Okinawan recipes ie spam chanpuru, spam miso soup, spam musubi. Not only spam, but their taco rice because many US servicemen loved tacos.
in Japan, hamburg (mixture of ground beef and pork) etc introduced by American military presence. There is also their version of what they call hash beef over rice. People in Japan rarely ate beef in those times.