Rémoulade
1/2 cup loosely packed flat-leaf parsley leaves
1 celery stalk, coarsely chopped
1 small shallot, coarsely chopped
1 garlic clove, peeled
1 cup mayonnaise
2 tablespoons whole grain mustard
1 tablespoon prepared horseradish
1 tablespoon fresh lemon juice
1/2 teaspoon paprika
1/2 teaspoon Worchestershire sauce
Pulse the first four ingredients in a food processor until finely chopped. Add mayonnaise, mustard, horseradish, lemon juice, paprika, and Worcestershire sauce; process until smooth. DO AHEAD: Can be made 3 days ahead. Cover and chill.
Shrimp