From Paris down to Provence we had this kind of salad dressing over the freshest greens, and I could not find out exactly how this creamy dressing was done. There are, I think, 2 nearly similar recipes on this site. But I have tweaked them, and this variation is really gorgeous. Soooo easy. The photo shows it drizzled over nothing more than romaine halves with spring onions, but obviously it will be great if tossed with any salad.