I grew up, like most Americans, eating a tomato meat sauce on my spaghetti which had no real Italian source, except in the imagination. In my neighborhood, it was sometimes called “Jewish spaghetti”. I later learned that the same dish, more or less, was called “Irish spaghetti” in my husband’s family.This is a dish which has been so assimilated that it is hard to believe it was ever seen as foreign, even exotic. But it…