What is commonly made up of mayonnaise, ketchup, Tabasco sauce and finely chopped vegetables, most often pickles, onions, bell peppers, green olives and sometimes chopped hard-boiled egg?

Thousand Island dressing is made by combining mayonnaise and ketchup as a base, then adding Tabasco sauce for heat and finely chopped vegetables like pickles, onions, bell peppers, green olives, and sometimes hard-boiled egg for texture and flavor. This creates the classic pinkish-orange salad dressing. Mustard sauce and garlic mayonnaise are different preparations, while tartar sauce typically uses mayonnaise with pickles and capers but no ketchup.