A hard cheese, such as Cheddar, consists of roughly one-quarter protein, one-third fat and one-third water. Hard cheeses are largely free of additives. Processed cheese on the other hand, contains a variety of additives such as dried milk powder emulsifiers and flavors.
Natural hard cheese can be stored for extended periods but quality eventually deteriorates as the proteolytic and lipolytic activities in the curd become excessive. Storage life can be improved by processing. Decomposition of proteins and lipids results in a nutritionally defective product unsuitable for consumption.
Most hard natural cheeses with low water content can be frozen for up to 2 months.
Natural hard cheese