coronation chicken 
noun [mass noun]
A cold dish of cooked chicken served in a sauce flavoured with apricots and curry powder.On a warm night, cook the rice ahead of time and cool it to serve with coronation chicken or a Thai chicken salad....
- Muzammil Ali, owner of the Jewel in the Crown restaurant, decided the country had become tired of coronation chicken, the spicy dish devised to celebrate the Queen's crowning 50 years earlier.
- Brie with sweet pepper and tomato chutney; coronation chicken and toasted almonds; roast ham and pineapple were on offer.
Origin
So named because the dish was created for the coronation of Queen Elizabeth II in 1953.