"The kind that's made out of pure chocolate and butter, if there is such an animal."

This is because they are made from pure chocolate.

Colors of domestic sheep range from pure white to dark chocolate brown and even spotted or piebald.

It means the bar is pure chocolate, without sugar.

His eyes were pure chocolate brown, and at that moment, they were gentle.

Richard lowered his hands, and his eyes were pure chocolate brown.

He eschews chemical additives, and went to Europe in search of a way to keep his chocolate pure.

That old lecher leers at Amy as if she be made of pure chocolate.

Or maybe the problem is the pure chocolate.

The nibs are then ground to cocoa mass, pure chocolate in rough form.