Whey cheese is a dairy product made of whey, the by-product of cheesemaking. After the production of most cheeses, about 50% of milk solids remain in the whey, including most of the lactose and lactalbumin. [1] The production of whey cheese allows cheesemakers to use the remaining whey, instead of discarding it as a waste product.
There are two fundamentally different products made of whey and called whey cheese: [2]
Cheese and whey cheese are distinct categories in the Codex Alimentarius. [4] In the appellation system of the European Union, protected whey cheeses are included in class 1.4 for "other products of animal origin" instead of class 1.3, for "cheeses". [6]
Two different kinds of whey cheeses are made, through different processes:
To produce coagulated whey cheese, heat and optionally acid is used to coagulate the whey. This type has a relatively low lactose content and a white-to-yellowish color. [4] It is possible to ripen albumin cheeses. [3] In addition to whey, the Codex Alimentarius[ clarification needed ] allows the use of milk, cream, and buttermilk, plus sodium chloride and starter culture. The whey can be pre-concentrated. [4]
Fresh albumin cheese is soft. It contains a lot of moisture and expires quickly. Ripened hard varieties have a much lower moisture content, making them preservable for much longer.[ citation needed ]
The production yield of coagulated whey cheese is generally lower than ordinary cheese, as whole milk contains only 1% whey protein.[ citation needed ] Yield is dependent on the composition of the whey, the addition of milk or cream, the production technology, and the composition (moisture content) of the final product. With efficient modern methods such as ultrafiltration, 10 to 20% of solids or more remain after the whey is mixed with cream and reduced. [7]
To produce a brunost, the whey is simply concentrated by boiling down and then molded. Cheeses produced using this method possess a relatively high lactose content. Typically, they have a yellowish-to-brown color and possess a sweet, cooked, or caramelized flavor. [3] [5] Pre-concentrated whey may be used. Additional allowed ingredients under the Codex Alimentarius are cream, milk, and other raw materials obtained from milk, plus sugar. [4]
Because almost all varieties generally contain significant amounts of whey, they are unsuitable for consumption by people who are lactose intolerant. Brocciu is lower in lactose. [8]
Dairy products or milk products, also known as lacticinia, are food products made from milk. The most common dairy animals are cow, water buffalo, nanny goat, and ewe. Dairy products include common grocery store food around the world such as yogurt, cheese, milk and butter. A facility that produces dairy products is a dairy. Dairy products are consumed worldwide to varying degrees. Some people avoid some or all dairy products because of lactose intolerance, veganism, environmental concerns, other health reasons or beliefs.
Mató is a fresh cheese of Catalonia made from sheep' or goats' milk, with no salt added.
Gouda cheese is a creamy, yellow cow's milk cheese originating from the Netherlands. It is one of the most popular and produced cheeses worldwide. The name is used today as a general term for numerous similar cheeses produced in the traditional Dutch manner.
Whey is the liquid remaining after milk has been curdled and strained. It is a byproduct of the manufacturing of cheese or casein and has several commercial uses. Sweet whey is a byproduct resulting from the manufacture of rennet types of hard cheese, like cheddar or Swiss cheese. Acid whey is a byproduct brought out during the making of acid types of dairy products, such as strained yogurt.
Cottage cheese is a curdled milk product with a mild flavour and a creamy, heterogeneous, soupy texture, made from skimmed milk. An essential step in the manufacturing process distinguishing cottage cheese from other fresh cheeses is the addition of a "dressing" to the curd grains, usually cream, which is mainly responsible for the taste of the product. Cottage cheese is not aged.
Curd is obtained by coagulating milk in a sequential process called curdling. It can be a final dairy product or the first stage in cheesemaking. The coagulation can be caused by adding rennet, a culture, or any edible acidic substance such as lemon juice or vinegar, and then allowing it to coagulate. The increased acidity causes the milk proteins (casein) to tangle into solid masses, or curds. Milk that has been left to sour will also naturally produce curds, and sour milk cheeses are produced this way.
Brunost is a common Norwegian name for mysost, a family of soft cheese-related foods made with whey, milk, and/or cream. The characteristic brown color and sweet taste result from milk sugars being caramelized after boiling. The term brunost is often used to refer to fløtemysost or Gudbrandsdalsost, which are the most popular varieties.
Goat cheese, goat's cheese or chèvre is cheese made from goat's milk. Goats were among the first animals to be domesticated for producing food. Goat cheese is made around the world with a variety of recipes, giving many different styles of cheeses, from fresh and soft to aged and hard.
Ricotta is an Italian whey cheese made from sheep, cow, goat, or Italian water buffalo milk whey left over from the production of other cheeses. Like other whey cheeses, it is made by coagulating the proteins that remain after the casein has been used to make cheese, notably albumin and globulin.
Cheesemaking is the craft of making cheese. The production of cheese, like many other food preservation processes, allows the nutritional and economic value of a food material, in this case milk, to be preserved in concentrated form. Cheesemaking allows the production of the cheese with diverse flavors and consistencies.
Acid-set or sour milk cheese is cheese that has been curdled (coagulated) by natural souring, often from lactic acid bacteria, or by the addition of acid. This type of cheese is technologically simple to produce.
Whey protein is a mixture of proteins isolated from whey, the liquid material created as a by-product of cheese production. The proteins consist of α-lactalbumin, β-lactoglobulin, serum albumin and immunoglobulins. Glycomacropeptide also makes up the third largest component but is not a protein. Whey protein is commonly marketed as a protein supplement, and various health claims have been attributed to it. A review published in 2010 in the European Food Safety Authority Journal concluded that the provided literature did not adequately support the proposed claims.
Crowdie is a type of soft, fresh cheese made from cows' milk, traditionally from Scotland.
Brocciu is a Corsican cheese produced from a combination of milk and whey, giving it some of the characteristics of whey cheese. It is produced from ewe's milk. It is notable as a substitute for lactose-rich Italian Ricotta, as brocciu contains less lactose.
Strained yogurt, Greek or Greek-style yogurt, yogurt cheese, sack yogurt, kerned yogurt or labneh is yogurt that has been strained to remove most of its whey, resulting in a thicker consistency than normal unstrained yogurt, while still preserving the distinctive sour taste of yogurt. Like many types, strained yogurt is often made from milk enriched by boiling off some water content, or by adding extra butterfat and powdered milk. In Europe and North America, it is often made from low-fat or fat-free cow's milk. In Iceland a similar product named skyr is made.
Cheese is a type of dairy product produced in a range of flavors, textures, and forms by coagulation of the milk protein casein. It comprises proteins and fat from milk. During production, milk is usually acidified and either the enzymes of rennet or bacterial enzymes with similar activity are added to cause the casein to coagulate. The solid curds are then separated from the liquid whey and pressed into finished cheese. Some cheeses have aromatic molds on the rind, the outer layer, or throughout.
Primost is a Norwegian cheese. The slightly brown cheese is made from cow's milk and has a soft spreadable texture. Cream is added towards the end of the process. The semi-sweet taste is derived from caramelizing the milk sugars of the whey as it is made.
There are many different types of cheese. Cheeses can be grouped or classified according to criteria such as length of fermentation, texture, methods of production, fat content, animal milk, and country or region of origin. The method most commonly and traditionally used is based on moisture content, which is then further narrowed down by fat content and curing or ripening methods. The criteria may either be used singly or in combination, with no single method being universally used.
Sheep milk cheese is a cheese prepared from sheep milk. Well-known cheeses made from sheep milk include the feta of Greece, Roquefort of France, manchego from Spain, the pecorino romano and ricotta of Italy. Yogurts, especially some forms of strained yogurt, may also be made from sheep milk.
Quark or quarg is a type of fresh dairy product made from milk. The milk is soured, usually by adding lactic acid bacteria cultures, and strained once the desired curdling is achieved. It can be classified as fresh acid-set cheese. Traditional quark can be made without rennet, but in modern dairies small quantities of rennet are typically added. It is soft, white and unaged, and usually has no salt added.