In a small bowl, combine the lemon juice and shallot, and allow them to sit about 10 minutes. Whisk in the olive oil, salt and pepper. Adjust the lemon juice, salt, and cracked pepper to taste.
Separate out ¼ cup each of the dill, parsley, tarragon, and parsley leaves, and set aside. Finely chop the remaining quantity of herbs, and toss them together with all of the chives and celery leaves.
Place about a quarter of the leaves, slightly overlapping, on a large platter, and drizzle a few tablespoons of the dressing over them. Evenly scatter a quarter of the chopped herbs, a quarter of the whole herb leaves, and a sprinkling of the fleur de sel over the lettuce.
Pile a second layer of lettuce leaves over the first, and continue layering in the same manner until you have used all of the lettuce, dressing and herbs, finishing with a sprinkling of herbs and the fleur de sel. Squeeze a little more lemon juice over the top, and several grindings of pepper to taste.
Serves: 4