Moules Mariniere with Garlic Herb Butter

Name: Moules Mariniere with Garlic Herb Butter
Ingredients: 2 tablespoons butter; 5 shallots, sliced; 3 garlic cloves, sliced; 1 fennel bulb, sliced thinly and fronds chopped or 1 cup chopped celery; 2 to 3 pounds mussels, well rinsed and beards removed; 5 cups dry white wine; 1 teaspoon salt; 1 teaspoon black pepper; Garlic Herb Butter, recipe follows; 1/2 cup Italian parsley leave, chopped; 1 stick unsalted butter, room temperature; 3 garlic cloves, minced; 4 tablespoons minced Italian parsley leaves; 1 tablespoon minced tarragon leaves; 2 tablespoons minced basil leaves; 1 tablespoon lemon juice; 1/2 teaspoon salt; Freshly ground pepper