Insalata di Arance (Orange Salad)

Orange salads, which can open or close a meal, are typical of both Sicily and Spain. The oranges should be slightly tart, to play the role normally played by vinegar. The oil for this salad should taste especially clean and fresh and, in my view, strongly of fruit. The salad is good as a minimal combination — oranges, oil, salt, and pepper — or you can …