Combine mayonnaise, French dressing, ketchup, horseradish, Worcestershire sauce, salt, and TABASCO® Sauce in a small bowl and mix well.
Arrange lettuce on four salad plates and top with shrimp. Drizzle with dressing and serve immediately.
Note: One (7 1/2 -ounce) can crab may be added to salad with shrimp.
Makes 4 servings.