Steamed Mussels In White Wine

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Details

8 Ingredients

• 1 large shallot, finely chopped
• 1/4 onion, finely chopped (about 1/3 cup)
• 1/4 cup dry white wine
• 3 1/2 Tbsps unsalted butter, cut into 1/2" cubes
• 1 Tbsp white wine vinegar
• 4 1/2 lbs mussels, scrubbed, debearded
• Freshly ground black pepper
• 2 Tbsps chopped flat-leaf parsley