These elegant creations are composed of:
a delicate cake layer (génoise, molly cake, madeleine, financier, etc)
a fruit, caramel or crispy core
a cream layer (vanilla mousse, caramel ganache montée, etc)
a glaze or flocked exterior
decorative touches like flower petals, fruits, gold leaf, and more. 
 
Your curiosity will define the components from which your signature entremet is created, from rose + raspberry, to passion fruit + espelette pepper, to the classic "Snickers" combination.  
 
Prices vary according to size and ingredients.