Steps
1. Rinse the mussels under cold water and discard any that are open and do not close when tapped.
2. Heat olive oil and butter in a large pan over medium heat.
3. Add minced garlic and shallots; sauté for 2 minutes until fragrant.
4. Pour in the white wine and bring to a simmer.
5. Add the mussels to the pan, cover with a lid, and steam for 5-7 minutes, shaking the pan occasionally, until all mussels have opened.
6. Discard any mussels that remain closed.
7. Stir in lemon juice, chopped parsley, and season with salt and pepper.
8. Serve hot with crusty bread to soak up the flavorful sauce.