The
allure of cheese knows no boundaries. Whether dense, robust, strong and
down to earth, creamy, delicate as a breeze, richly delicious or
patrician and elegant. Cheese is a heavenly food to be cosseted, debated
and deeply appreciated for the marvel it is and the intense pleasure it
gives.
Buying
cheese can be a minefield, bewildering and intimidating. The labels are
confusing as there are so many
varieties of the same yet different cheeses.
Cheese can be made from any
milk, usually from cow's, goat's, sheep and water buffalo. In the Middle
East they use mare’s milk and camel’s milk. There are
no limitations on any mammal’s milk, other than quantity and availability.
The basic principles of cheese making are the same for
all cheeses. The object is
to extract water from milk, leaving milk solids (fats,
proteins, vitamins etc). To simplify the stages of a very complex process, it involves
coagulating milk, treating curds, moulding, pressing and
finishing the cheese and leaving it to ripen. At this stage there are many variations.
From the biggest Commercial cheese makers to the smallest Artisan
operation, the awareness of quality control is paramount.
These controls are further tested by food and government
controlled inspectors.
The process of cheese making is an ancient
craft
Going back to the earliest livestock
farmers allowed the milk to curdle, beating it with branches and pressing it on
stones then drying it in the sun and sprinkling it with salt. This was a way of
using valuable surplus milk and converting it into a food for lean
times.
By today’s standards of industrial technology, cheese
making is a complicated process. There
are big commercial cheese operations to satisfy the enormous worldwide
demand.
The smaller farmyard (artisan or artisinal) ventures are
practised by craftsmen using traditional methods and considered
preferable by aficionados. They
maintain that cheeses manufactured from untreated milk are better than
those made from pasteurized milk, a process used in the commercial
operation.
Pasteurization is named after Louis Pasteur,
who originated the process.
This is a
way of partially sterilizing milk to destroy
potentially harmful bacteria. It
makes it possible to mix milk from different herds to allow for
large-scale industrial cheese making.
Cheese connoisseurs argue that this process destroys the
individuality of cheese and makes a blander product. Nevertheless, most
of cow’s milk cheese in the world today is pasteurized.
The need to coagulate milk in order to make cheese has
been recognized since Roman times by extracting the enzyme Rennet from
certain plants.
Cheese making capitalizes on the curdling of milk, which contains
proteins, fat, lactose (milk sugars) and minerals.
First the milk is carefully tested to make sure there
are no harmful agents. The milk is heated, held at a given temperature
for a short period to destroy any harmful bacteria i.e. pasteurization.
Special starter cultures are then added to the warm milk
and change a very small amount of the milk sugar into lactic acid.
This acidifies the milk at a much faster rate and prepares it for
the next stage.
Rennet
comes in different forms. An enzyme extracted from the stomach of
a young calf or lamb. A
non-animal rennet can also be used (kosher cheese), which is then added to the
milk and within a short time a curd is produced.
The curd is
cubed and heated to start a shrinking process, which, with the steady production
of lactic acid from the starter cultures will change into small
rice-sized grains.
At a carefully chosen point, the curd grains are allowed
to fall to the bottom of the cheese vat. The left over liquid; water, milk
sugar and albumen – now called Whey, is drained off.
The curd grains mat together
and form
large slabs of curd. Later
they are pressed and packed in various sized containers for
maturing.