This was delicious! I used sour cream in the tomato sauce and added a teaspoon of dijon. In the vinegarette, I didn't have white balsamic, so used lime juice and a dask of dark balsamic vinegar. The combination of fresh salad with dressing, eggs with the rich sauce and a dollop of salty caviar made this dish really sophisticated and perfect for a relaxing breakfast/brunch. I was reaching for a glass of savignon blanc at only 10.30am!