Coronation chicken is a dish generally used to fill sandwiches and rolls in the United Kingdom.
It is a combination of herbs and spices with precooked cold chicken meat and a creamy mayonnaise-based sauce. Normally a bright yellow colour, coronation chicken is traditionally flavoured with curry powder or sauce; although today more sophisticated versions of the recipe are often made, using fresh herbs and spices, and adding new ingredients such as almonds, raisins and creme fraiche.
From Wikipedia