For each person eating, buy a pound of mussels. Wash and scrub them well, removing the beards, while you bring a large pot with a few inches of water to a boil. Set the cleaned mussels in a colander or steamer insert and steam them covered until they open up wide. Meanwhile, prepare a sauce with cream, garlic, salt, and white wine. Pour the sauce over the steamed mussels, and serve with sourdough bread.
Finish the meal with chocolate-chip cookies.