Very popular in France- you'll find it on any bistro menu. A simple salad of grated carrots and parsley, with a few other ingredients. The most important thing is the size of the carrots- they must be grated very thin. This salad is best with carrots alone.
I would recommend storing the dressing and the salad separately until time to eat.
You may want to add more oil or lemon, etc. But do not overdress. It should glisten, but not be swimming in dressing.