Thousand Island dressing is a creamy American salad dressing made from mayonnaise blended with chopped pimento or sweet pickle relish, chilli sauce or ketchup, and paprika, often with finely chopped onion, hard-boiled egg, or olives added. The result is pink, tangy, mildly sweet, and speckled — a step up from plain mayonnaise that suits crisp salads, prawn cocktails, and burgers. Its origins are disputed between the Thousand Islands region of New York and various hotels, but it became a steakhouse and diner classic in the twentieth century. Commercial versions are shelf-stable emulsions; homemade ones taste fresher but must be refrigerated and used within days. It is a high-fat dressing best used with restraint.