Increase heat to medium and add 2 cups of dry white wine to the pan; stir and allow to simmer gently (uncovered) and reduce slightly for about 10 minutes while you clean your shells.
Gently add cleaned shells to the pan, cover and allow to steam in the broth for 5 - 6 minutes (allow slightly less time for smaller shells, and slightly more time for larger ones).
Slice baguettes and set out a big platter with plenty of room for the cooked shells and broth.
Place cooked, open shells (discard any that remain closed) and broth onto the platter and arrange bread slices around the outside; garnish with fresh chopped parsley. Provide a large serving spoon and small bowls to serve, and a large bowl, or individual bowls, for the empty shells.
Serve with slightly chilled Sauvignon Blanc.
Recipe Notes
Recipe can be doubled or tripled - just add more cooking time to allow the broth to come together and the shells to cook, or prepare in batches.