Cheese is a solid
food made from the
milk of
cows,
goats,
sheep, and other
mammals. Cheese is made by
curdling milk using a combination of
rennet (or rennet substitutes) and
acidification.
Bacteria culture acidify the milk and play a role in defining the
texture and flavor of most cheeses. Some cheeses also feature
molds, either on the outer
rind or throughout.
There are
hundreds of types of cheese produced all over the world. Different styles and flavors of cheese are the result of using milk from various mammals or with different
butterfat contents, employing particular species of bacteria and molds, and varying the length of aging and other processing treatments. Other factors include animal diet and the addition of flavoring agents such as
herbs,
spices, or
wood smoke. Whether the milk is
pasteurized may also affect the flavor. The yellow to red coloring of many cheeses is a result of adding
annatto. Cheeses are eaten both on their own and cooked as part of various dishes; most cheeses melt when heated.
All About Cheese
For a few cheeses, the milk is curdled by adding
acids such as
vinegar or
lemon juice. Most cheeses, however, are acidified to a lesser degree by bacteria, which turn
milk sugars into
lactic acid, followed by the addition of rennet to complete the curdling. Rennet is an
enzyme mixture traditionally obtained from the stomach lining of young
cattle, but now also laboratory produced. Vegetarian alternatives to rennet are available; most are produced by fermentation of the
fungus Mucor miehei, but others have been extracted from various species of the
Cynara thistle family.
Cheese has served as a hedge against famine and is a good travel food. It is valuable for its portability, long life, and high content of
fat,
protein,
calcium, and
phosphorus. Cheese is lighter, more compact, and has a longer shelf life than the milk from which it is made.
Cheesemakers can place themselves near the center of a dairy region and benefit from fresher milk, lower milk prices, and lower shipping costs. The substantial storage life of cheese lets a cheesemaker sell when prices are high or when money is needed.
Cheese goes really well with
wine.