What Does Carte Noire mean Not what brand of coffee it is but what significance the phrase Carte Noire has to the expensive coffee brand?

Answer 1

the black card

the colour "black" was picked because of the colour of a good coffee (the darker, the better) - they use the word "carte" because as in a restaurant, the "carte" gives a higher idea of quality (say, more than the fixed-price menu). To eat "à la carte" is more expensive and is not for everybody, so people will think they deserve a coffee called "carte something".