Brioches with Marrow, Lobster, Poached Garlic, and Chervil

Name: Brioches with Marrow, Lobster, Poached Garlic, and Chervil
Yield: Serves 4
Cuisine: United States
Ingredients: 8 beef marrow medallions; ½ cup Italian parsley leaves; 1½ cups fish stock; ½ pound sweet butter; 1 cup fresh chervil leaves; salt and freshly ground pepper; salt and freshly ground pepper; 3 tablespoons dry white wine; ½ cup lobster essence; 1 1½-pound lobster, cooked (method 2) in salted water, cooled, meat removed, legs saved for garnish; 4 brioches; 12 cloves garlic, peeled; 1 1½-pound lobster, cooked (method 2) in salted water, cooled, meat removed, legs saved for garnish