Mussels and Fries with Mustard Mayonnaise Recipe

Mussels and Fries with Mustard Mayonnaise Recipe

  • 1 (15- to 16-ounce) package frozen french fries
  • 1 small onion
  • 2 garlic cloves, forced through a press
  • 3 tablespoons unsalted butter
  • 2 teaspoons dry mustard
  • 2 teaspoons water
  • 1/2 cup mayonnaise
  • 1 cup dry white wine
  • 2 pounds cultivated mussels, rinsed
  • 2 tablespoons chopped flat-leaf parsley
  • Equipment: an adjustable-blade slicer
  • Accompaniment: crusty bread (preferably a baguette)
  1. Cook french fries according to package instructions and keep warm in oven if necessary.
  2. 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.
  3. While onion cooks, whisk together mustard and water until smooth, then whisk in mayonnaise and 1/4 teaspoon pepper.
  4. Add wine to onion and briskly simmer, covered, stirring occasionally, until onion is almost tender, about 5 minutes. Add mussels and cook, covered, stirring occasionally, until mussels just open wide, 4 to 6 minutes, checking frequently after 4 minutes and transferring as cooked to a bowl. (Discard any mussels that remain unopened.) Stir parsley into cooking liquid and season with salt. Pour liquid over mussels, then serve with fries and mustard mayonnaise.