Peel the oranges and remove the white bitter skin. Cut the fruit into thin slices and remove the stones. Cut the onion into very fine cubes, finely chop the parsley. Stone the olives. Drizzle the orange slices with olive oil and season with salt and pepper from the mill. Scatter onion cubes, parsley and olives (whole or in small slices, to taste) and chill for at least 40 minutes.
A complete success on a warm summer evening in 2004 (Mediterranean buffet).