Preheat a fryer to 360 degrees F.
Season the flour with Essence and place in a shallow dish. Dredge the eel in the seasoned flour, shaking off any excess.
Fry the eel until golden brown, about 2 to 3 minutes. Remove to a paper towel-lined plate.
In a large bowl, combine the sturgeon, onions, chives, vinegar, oil, some of the Buttermilk Dill Dressing, salt, and pepper, and toss gently.
In a small bowl, combine the vinegar, oil, salt, and pepper, and drizzle over the lettuces. Place 1/4 head of lettuce on each of 4 large salad plates. Arrange the sturgeon mixture over the lettuce. Top with the fried eel. Drizzle each serving with 3 tablespoons of the dressing. Place 1 teaspoon of the caviar in the center and serve.
Yield: 4 servings