Mussels steamed in white wine and served in a sauce made from the cooking liquid with butter and shallots is a classic French preparation of mussels, moules marinières. This is Guy’s method for moules marinières, the way he grew up making it in France, and one of the easiest and loveliest ways of preparing mussels. It is wonderful for an appetizer or a light lunch, and excellent with a glass of white wine and some crusty bread. Don’t buy any whose shells are cracked or open or any that refuse to close their shells when you handle or tap them, those are likely dying or dead. Try to cook the mussels immediately (unwrap them as soon as you get home), but if you have to wait place them in a bowl and cover them with a damp towel so they can breathe. Looking over the closed mussels, see if any still have their beards (long hairy byssal threads which help anchor the mussel to surfaces) and pull them out, pulling slowly and strongly towards the hinge of the shell. Cook until shells have opened, and the mussels are just cooked, looking steamed and soft, 5 to 7 minutes. Take care not to overcook, or the mussels will be rubbery and hard. Let the water in the pot settle for a minute. Any grit will settle to the bottom. Gently pour out the cooking water into a measuring cup, leaving the grit in the pot to discard of later. If the water you’ve measured out is still a little gritty, filter out the grit using a sieve. Serve immediately. Serve with crusty bread for dipping in the sauce.
