Start by washing the mussels and discard any that are dead. Place the olive oil in a large pot and camalize the onions a bit. Next add the mussels and the salt and pepper and cook on high for about 4 - 5 minutes covered, stiring occasionly. Once the mussels have started to open and begin to release water add the parsley and white wine then cover again for another 5-7 minutes, stiring occasionly. When the mussles are done they should have all opened up, discard any that do not open after cooking. Serve with sliced French bread for dipping in the sauce.