A syrup of this density is filtered to remove sugar crystals and calcium malate.
The filtered syrup is placed in the target containers while hot (usually 82 degrees C or more). To sterilize the stopper, the containers are turned upside down.
In the past, cheese was usually packed in black wax. Nowadays this is rarely done.
It is found either in foil packaging (such a cheese can not breathe) or wrapped in greased cheese wraps, which allow the cheese to breathe and at the same time protect it from dirt getting into it.