Thousand Island dressing does not contain raw egg. It is a creamy condiment typically made with mayonnaise, tomato paste, chili sauce, ketchup, Worcestershire sauce, vinegar, and spices like garlic powder and onion powder. The only dairy products used in the recipe are mayonnaise and sometimes sour cream or yogurt. The eggs are usually cooked until they reach an internal temperature of 160°F before being added to the mixture so that any potential salmonella bacteria have been killed off by heat.