We often eat this simple salad for lunch, only accompanied by crusty French baguette and a glass of wine! Feel free to substitute the Roquefort for a blue cheese that is readily available where you live; it is also superb with Stilton & Shropshire Blue cheese. I have served this as a dinner party starter & also in place of a "just" cheese course as well! If you cannot obtain walnut oil, any other nut oil will be fine, or a good olive oil. This recipe serves 6 people for a light luncheon or 8-10 people as a dinner party starter.