Mussels and Fries with Mustard Mayonnaise

Ingredients

• 2 pounds cultivated mussels
• 1 cup dry white wine
• ½ cup mayonnaise
• 2 teaspoons water
• 2 teaspoons dry mustard
• 3 tablespoons unsalted butter
• 2 garlic cloves
• + 5 more ingredients
• • 1 small onion
  • 2 tablespoons flat-leaf parsley
  • 1 adjustable-blade slicer
  • crusty bread (preferably a baguette)
  • 1 15- to 16-ounce package frozen french fries

Cook french fries according to package instructions and keep warm in oven if necessary. Meanwhile, cut onion into very thin slices with slicer, then cook with garlic and a pinch of salt in butter in a wide heavy medium pot over medium-high heat, covered, stirring occasionally, until pale golden. ...

View full recipe at Epicurious