What is cocoa mass, cocoa powder, cocoa butter? Which should be used to make chocolate?

In the ingredient list of chocolate, it generally contains: cocoa mass, cocoa butter, and cocoa powder. The content of cocoa solids will be marked on the outer packaging of chocolate. The more cocoa solids content (including cocoa mass, cocoa powder and cocoa butter), the higher the beneficial ingredients and nutritional value in chocolate. Chocolate products with more than 60% cocoa content on the market are rare; most chocolate products are too high in sugar and taste so sweet that they can only be classified as candies.