Mussels with White Wine

Name: Mussels with White Wine
Ingredients: 3 tablespoons olive oil; 6 small shallots, thinly sliced; 6 garlic cloves, thinly sliced; 2 cups dry white wine; 5 pounds mussels, scrubbed, debearded; 6 tablespoons (3/4 stick) unsalted butter, cut into pieces; 2 tablespoons chopped fresh dill plus more for serving; 2 tablespoons chopped fresh flat-leaf parsley plus more for serving; Kosher salt, freshly ground pepper