There’s no more proof than any other dish. It’s so popular that no one bothered to have a “protected origin” certificate. Yet they predominantly are served in

There’s no more proof than any other dish. It’s so popular that no one bothered to have a “protected origin” certificate. Yet they predominantly are served in this region so having them being “ruskie” or “ruthenian” (a huge region) is much more fair than naming it Galician.