Leeks Vinaigrette with Smoked Whitefish and Apple

Name: Leeks Vinaigrette with Smoked Whitefish and Apple
Yield: 8 Servings
Ingredients: 1 shallot, minced; 2 tablespoons fresh lemon juice; 1 tablespoon Champagne vinegar or white wine vinegar; 1 teaspoon Dijon mustard; 1/2 cup olive oil; 8 whole small (1 inch in diameter) leeks; 1 Gala apple, cored, cut into 1/4-inch cubes; 8 ounces smoked whitefish, carefully boned, coarsely flaked