To make the sauce fry the onion and garlic in oil until soft. Add the tomatoes and simmer for a few minutes until slightly reduced. Add herbs and seasoning.
Put a high sided frying pan on the heat filled with salted water and vinegar. when it boils break the eggs in one by one and reduce the heat to simmering.
When the white is set, put a spoonful of sauce onto four dishes. Remove the eggs with a draining spoon and place on the sauce.