"Creme de la creme" is a phrase in French.
Literally, it can be translated as "The best of the best."
This phrase is comparable to the English idiom "Cream of the crop," which usually denotes the best of any number or set of people, places, services, or performance.
"Creme de la creme" is also the name of a french dish, made from refined cream and usually served cold with cake.