At home when I was growing up, we sometimes ate eggs baked in leftover pasta sauce which we called, ‘eggs in tomato’, not quite as evocative as ‘eggs in purgatory’ that I later discovered this dish is also called.
I’ve been told it’s origins are in Napoli {although the Abruzzo claims it too} and it is said that the eggs are like the souls in purgatory who are caught between the tomatoes {purgatory} and trying to escape to heaven.