This is a spin on the classic recipe for french steamed musselsyou know, the big bowl of mussels bathed in white wine, butter, and garlic. This dish exudes a certain sophistication, and it works for a casual dinner party. It's both easy and quick, but like all such recipes, the quality of the ingredients matters a lot. Buy the best mussels and good, sweet butter and use a white wine you'd drink yourself. Figure on 1 pound of mussels per person for the main course.