couverture       
noun [ U ]  food & drink specialized uk/ˈkuː.və.tjʊər/ us/ˈkuː.vɚ.tʃɚ/ (also couverture chocolate)
 (巧克力制造商和专业糕点师使用的)调温巧克力
a type of chocolate used by makers of chocolates, cakes, and pastries
  This award-winning chocolatier uses Belgian couverture to produce an array of delicacies. 这个屡获殊荣的巧克力制造商使用比利时调温巧克力生产了一系列美味甜品。 
 You first have to temper the couverture chocolate - heat it up to gain the right texture to work with. 你首先要对调温巧克力进行调和——将其加热以达到合适的质地,从而进行加工。 
 - More examples
 - Couverture chocolate has a high proportion of cocoa butter, and therefore a better flavour.
 - While most chocolatiers start with couverture chocolate from producers such as Valrhona, Marcolini makes his own chocolate directly from the bean.
 - Like most independent chocolate businesses, they made their chocolates from "couverture", a professional grade chocolate bought in from specialist producers.
 - For the chocolate sauce you need 600g dark couverture and 500ml single cream.
 - This family-run enterprise hand-makes its luxurious and imaginative range of truffles, bars and figurines on the premises using Belgian couverture.