First wash and clean mussels under cold running water. Place in fridge until ready to use.
Use two large stock pots.
Divide all ingredients in half to process in the two big pots.
Place butter and oil in pots to melt over medium heat.
Saute shallots.
Add all the rest of the ingredients except lemon juice, wine, clam juice and cream.
Cook about 5 minutes.
Stir in lemon juice and white wine. Reduce liquids by half.
Add clam juice, boil and simmer for 5 minutes, then increase to medium high heat.
Add mussels and cook covered until mussels open. About 5 minutes.
Remove mussels with a slotted spoon to a serving dish. Important – discard any unopened mussels.
Add cream to remaining liquid in pot and cook for about two minutes.
Pour sauce over mussels in serving dish and sprinkle with parsley.
Serve with fresh Portuguese rolls or French bread for soaking up the delicious sauce.