The first two definitions of "creme" on Merriam-Webster are: 1 : a sweet liqueur 2 : cream or a preparation made with or resembling cream used in cooking The word comes from French crème, which means... cream! Cream, in English, is a word that means "that dairy product that comes from the fatty stuff from milk." Cream is used in common foods like whipped cream and sour cream. Creme, on the ...
There is an earlier expression, crème de la crème (often spelled creme de la creme), which is a borrowing from French (where it means, literally, cream of the cream). In both languages, the expression means metaphorically the best of the best, i.e. the very best.
We were regaled next with creme bouilli, or boiled cream ; the ingredients which enter into the composition of the beverage are sour cream, eggs, and milk hot from the cow, with a little rennet ; we were served with it in pans, with a spoon to sup it, and sugar was given to such as chose it.