Mustard-Seed-Crusted Burgers with Horseradish Slaw

Name: Mustard-Seed-Crusted Burgers with Horseradish Slaw
Cook time: 20 minutes
Yield: Makes 4 Servings
Ingredients: 1/2 cup mayonnaise; 1/2 cup sour cream; 3 tablespoons prepared horseradish; 1 1/3 pounds ground beef; 1/4 cup yellow mustard seeds, coarsely crushed; 1 tablespoon vegetable oil; 4 kaiser rolls, halved horizontally; 3 cups (about 6 ounces) thinly sliced iceberg lettuce