Moules Marinieres

Ingredients:
1 L mussels
1 small onion,peeled and finely chopped
2 sticks celery, scrubbed
Salt and freshly ground black pepper
1 bunch parsley
1 tbsp tarragon vinegar
2 tbsps white wine

Directions
    Scrub the mussels well, discarding any that are open and will not close when tapped sharply. Put into a large pan with enough water to cover. Add the onion , chopped celery, seasoning and parsley. Heat until the mussels open. Remove beards from the mussels and leave mussels on half shell.  Reboil the liquid with the vinegar and wine and strain over the mussels.