Party concoction is a term used to describe a type of food or beverage that is served at a party. The crossword solution for this term is DIP, which is a type of sauce or spread that is often served with chips, crackers, or vegetables. It can be made from a variety of ingredients such as cream cheese, sour cream, mayonnaise, and various herbs and spices. Dips are a popular choice for parties because they are easy to make and can be customized to suit the tastes of the guests.