Ingredients: Unsalted butter plus, Tablespoons melted, for, brushing, Onion (5 to 6 ounces),, finely diced, Sprigs tarragon leaves, coarsely chopped (2, teaspoons), Sprigs Italian parsley, coarsely chopped (2, tablespoons), Peeled raw Maine shrimp or, or cooked crabmeat or, Kosher or sea salt, Freshly ground black pepper, Live (1 1/2 to 2, 1/2-pound) hard, shell select, lobsters, Ritz crackers common, oyster crackers, or, dried corn bread,, crumbled, ...