There are many different types of cheese, which can be grouped or classified according to criteria such as: length of fermentation, texture, production method, fat content, animal source of the milk, and country or region of origin. These criteria may be used either singly or in combination, [1] with no method used universally. [2] The most common traditional categorization is based on moisture content, which is then further narrowed down by fat content and curing or ripening methods. [3] [4]
The combination of types produces around 51 different varieties recognized by the International Dairy Federation, [3] over 400 identified by Walter and Hargrove, over 500 by Burkhalter, and over 1,000 by Sandine and Elliker. [5] Some attempts have been made to rationalise the classification of cheese; a scheme was proposed by Pieter Walstra that uses the primary and secondary starter combined with moisture content, and Walter and Hargrove suggested classifying by production methods. This last scheme results in 18 types, which are then further grouped by moisture content. [3]
Cheeses may be categorized by the source of the milk used to produce them. While most of the world's commercially available cheese is made from cow's milk, many parts of the world also produce cheese from goats and sheep. Examples include Roquefort (produced in France) and pecorino (produced in Italy) from ewe's milk. [6] One farm in Sweden also produces cheese from moose's milk (known as 'elk' in Europe). [7]
Sometimes cheeses marketed under the same name are made from milk of different species—feta cheeses, for example, are made in Greece from either sheep's milk, or a combination of sheep and goat's milk. [8] Queso añejo cheese is traditionally made with goat milk, but in the modern era is generally made with cow's milk. [9]
Cheeses are also labeled based on the added fat content of the milk from which they are produced. Double cream cheeses are soft cheeses of cows' milk enriched with cream so that their fat in dry matter (FDM or FiDM) content is 60–75%; triple cream cheeses are enriched to at least 75%. [10]
Categorizing cheeses by moisture content or firmness is a common but inexact practice. Harder cheeses have a lower moisture content than softer cheese, as they are generally packed into molds under more pressure and aged for a longer time than the soft cheeses. The lines between soft, semi-soft, semi-hard, and hard are often classified by a metric based on the weight of the moisture content of the cheese as a division of its dry weight minus the weight of the fat content in the cheese. [11] Other factors than moisture have a role in the firmness of the cheese; a higher fat content tends to result in a softer cheese, as fat interferes with the protein network that provides structure, other significant factors include PH level and salt content. [12] [13] [14]
Soft cheeses include soft-ripened cheeses, some blue cheeses, some pasta filata cheeses, and fresh cheeses. They are often spreadable, but do not generally melt or brown well. [15] Soft cheese are generally produced in a cool and humid environment and tend to have very short maturation periods: cream cheeses, which are not matured; Brie and Neufchâtel that mature for no more than a month, and Neufchâtel which can be sold after 10 days of maturation. [16] [17]
The higher moisture content of soft cheeses will mean they spoil faster than hard cheeses and are kept at low temperatures to delay spoiling. [18]
The moisture content of soft cheeses is between 55–80% of its dry weight. [19]
Semi-soft cheeses, and the sub-group Monastery cheeses, have a high moisture content, smooth and creamy interior, and a washed rind. [20] [21] [22] Well-known varieties include Mozzarella, Havarti, Munster, Port Salut, Jarlsberg, and Butterkäse. Many blue cheeses are semi-soft. [15]
The moisture content of semi-soft cheeses is between 42–55% of its dry weight. [19]
Semi-hard cheeses include the familiar Cheddar, one of a family of semi-hard or hard cheeses (including Cheshire and Gloucester), whose curd is cut, gently heated, piled, and stirred before being pressed into forms. Colby and Monterey Jack are similar but milder cheeses; their curd is rinsed before it is pressed, washing away some acidity and calcium. Certain Swiss-style cheeses, such as Emmental (often called "Swiss cheese" in the US), may be semi-hard. The same bacteria that give such cheeses their eyes also contribute to their aromatic and sharp flavours. Other semi-soft to firm cheeses include Cantal and Kashkaval/Cașcaval.
Cheeses of this type are often considered as lending themselves to melting in culinary preparation. [23]
The moisture content of semi-hard cheeses is between 45–50% of its dry weight. [19]
Hard cheeses are packed tightly into forms (usually wheels) and aged for months or years until their moisture content is significantly less than half of their weight, leading to a firm and granular texture. Most of the whey is removed before pressing the curd.
Hard cheeses are often consumed in grated form, and include Grana Padano, Parmesan, or pecorino. The flavour of hard cheeses is often perceived to be richer. [24] [25]
The moisture content of semi-hard cheeses is between 25–45% of its dry weight. [19]
There are three main categories of cheese in which the presence of mold is an important feature: soft-ripened cheeses, washed-rind cheeses and blue cheeses. [26]
Soft-ripened cheeses begin firm and rather chalky in texture, but are aged from the exterior inwards by exposing them to mold. The mold may be a velvety bloom of P. camemberti that forms a flexible white crust and contributes to the smooth, runny, or gooey textures and more intense flavours of these aged cheeses. [26]
Brie and Camembert, the most famous of these cheeses, are made by allowing white mold to grow on the outside of a soft cheese for a few days or weeks. [26]
Washed-rind cheeses are soft in character and ripen inwards like those with white molds; however, they are treated differently. Washed-rind cheeses are periodically cured in a solution of saltwater brine or mold-bearing agents that may include beer, wine, brandy and spices, making their surfaces amenable to a class of bacteria ( Brevibacterium linens , the reddish-orange smear bacteria) that impart pungent odors and distinctive flavours and produce a firm, flavourful rind around the cheese. [27] Washed-rind cheeses can be soft (Limburger), semi-hard, or hard (Appenzeller). The same bacteria can also have some effect on cheeses that are simply ripened in humid conditions, like Camembert. The process requires regular washings, particularly in the early stages of production, making it quite labor-intensive compared to other methods of cheese production. [28]
S-rind cheeses are also smear-ripened with solutions of bacteria or fungi (most commonly Brevibacterium linens , Debaryomyces hansenii or Geotrichum candidum [29] ), which usually gives them a stronger flavor as the cheese matures. [29] In some cases, older cheeses are smeared on young cheeses to transfer the microorganisms. Many, but not all, of these cheeses have a distinctive pinkish or orange coloring of the exterior. Unlike with other washed-rind cheeses, the washing is done to ensure uniform growth of desired bacteria or fungi and to prevent the growth of undesired molds. [30] Examples of smear-ripened cheeses include Munster and Port Salut.
So-called blue cheese is created by inoculating a cheese with Penicillium roqueforti or Penicillium glaucum . This is done while the cheese is still in the form of loosely pressed curds, and may be further enhanced by piercing a ripening block of cheese with skewers in an atmosphere in which the mold is prevalent. The mold grows within the cheese as it ages. These cheeses have distinct blue veins, which gives them their name and, often, assertive flavours. The molds range from pale green to dark blue, and may be accompanied by white and crusty brown molds. [31] [32] Their texture can be soft or firm. [33] Some of the most renowned cheeses in this type include Roquefort, Gorgonzola and Stilton.
The main factor in categorizing these cheeses is age. Fresh cheeses without additional preservatives can spoil in a matter of days. [34]
For these simplest cheeses, milk is curdled and drained, with little other processing. Examples include cottage cheese, cream cheese, curd cheese, farmer cheese, caș, chhena, fromage blanc, queso fresco, paneer, fresh goat's milk chèvre, Breingen-Tortoille, Irish Mellieriem Rochers and Belgian Mellieriem Rochers. Such cheeses are often soft and spreadable, with a mild flavour. [35]
Whey cheeses are fresh cheeses made from whey, a by-product from the process of producing other cheeses which would otherwise be discarded. Corsican brocciu, Italian ricotta, Romanian urda, Greek mizithra, Croatian skuta, Cypriot anari cheese, Himalayan chhurpi and Norwegian Brunost are examples. Brocciu is mostly eaten fresh, and is as such a major ingredient in Corsican cuisine, but it can also be found in an aged form. [36]
Some fresh cheeses such as fromage blanc and fromage frais (the latter differing from the former in that it contains live cultures) are commonly sold and consumed as desserts. [37] [38]
Stretched curd, for which the Italian term pasta filata is often used, is a group of cheeses where the hot curd is stretched, today normally mechanically, producing various effects. [39] Many traditional pasta filata cheeses such as the Italian mozzarella and halloumi from the Eastern Mediterranean also fall into the fresh cheese category. Fresh curds are stretched and kneaded in hot water to form a ball of mozzarella, which in southern Italy is usually eaten within a few hours of being made. Stored in brine, it can easily be shipped, and it is known worldwide for its use on pizza. But not all stretch-curd cheeses are fresh; the Italian provolone, Ragusano, caciocavallo and many others are hard or semi-hard, and aged. Oaxaca cheese from Mexico is semi-hard, but not aged. Like the pressed cooked cheeses (below), all these are made using thermophilic lactic fermentation starters. [40] Many of the various types of string cheese are made this way.[ citation needed ]
Swiss-type cheeses, also known as Alpine cheeses, are a group of hard or semi-hard cheeses with a distinct character, whose origins lie in the Alps of Europe, although they are now eaten and imitated in most cheesemaking parts of the world. They are classified as "cooked", meaning made using thermophilic lactic fermentation starters, incubating the curd with a period at a high temperature of 45°C or more. [41] Since they are later pressed to expel excess moisture, the group are also described as "'cooked pressed cheeses'", [42] fromages à pâte pressée cuite in French. Their distinct character arose from the requirements of cheese made in the summer on high Alpine grasslands (alpage in French), and then transported with the cows down to the valleys in the winter, in the historic culture of Alpine transhumance. Traditionally the cheeses were made in large rounds or "wheels" with a hard rind, and were robust enough for both keeping and transporting. [43]
The best known cheeses of the type, all made from cow's milk, include the Swiss Emmental, Gruyère and Appenzeller, as well as the French Beaufort and Comté (from the Jura Mountains, near the Alps). Both countries have many other traditional varieties, as do the Alpine regions of Austria (Alpkäse) and Italy (Asiago), though these have not achieved the same degree of intercontinental fame. [44] Most global modern production is industrial, and usually made in rectangular blocks, and by wrapping in plastic no rind is allowed to form. Historical production was all with "raw" milk, although the periods of high heat in making largely controlled unwelcome bacteria, but modern production may use thermized or pasteurized milk. [45]
The general eating characteristics of the Alpine cheeses are a firm but still elastic texture, flavor that is not sharp, acidic or salty, but rather nutty and buttery. When melted, which they often are in cooking, they are "gooey", and "slick, stretchy and runny". [46]
Another related group of cooked pressed cheeses is the very hard Italian "grana" cheeses; the best known are Parmesan and Grana Padano. Although their origins lie in the flat and (originally) swampy Po Valley, they share the broad Alpine cheesemaking process, and began after local monasteries initiated drainage programmes from the 11th century onwards. These were Benedictine and Cistercian monasteries, both with sister-houses benefiting from Alpine cheesemaking. They seem to have borrowed their techniques from them, but produced very different cheeses, using much more salt, and less heating, which suited the local availability of materials. [47]
Brined or pickled cheese is matured in a solution of brine in an airtight or semi-permeable container. This process gives the cheese good stability, inhibiting bacterial growth even in hot environments. [48] Brined cheeses may be soft or hard, varying in moisture content, and in color and flavor, according to the type of milk used. All will be rindless, and generally taste clean, salty and acidic when fresh, developing some piquancy when aged, and most will be white. [48] Varieties of brined cheese include bryndza, feta, halloumi, sirene, and telemea. [48] Brined cheese is the main type of cheese produced and eaten in the Middle East and Mediterranean areas. [49]
Processed cheese is made from traditional cheese and emulsifying salts, often with the addition of milk, more salt, preservatives, and food coloring. Its texture is consistent, and it melts smoothly. It is sold packaged and either pre-sliced or unsliced, in several varieties. Some are sold as sausage-like logs and chipolatas (mostly in Germany and the US), and some are molded into the shape of animals and objects. Some, if not most, varieties of processed cheese are made using a combination of real cheese waste (which is steam-cleaned, boiled and further processed), whey powders, and various mixtures of vegetable oils, palm oils or fats. Processed cheese is constituted with other ingredients such as milk proteins, emulsifiers, and flavorings; meaning the cheese content may be significantly less than 100%. The US Food and Drug Administration stipulates that a food product must contain at least 51% of actual cheese content to be labelled as a cheese. [50] [51] [52] [53]
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.
Brie is a soft cow's-milk cheese named after Brie, the French region from which it originated. It is pale in colour with a slight greyish tinge under a rind of white mould. The rind is typically eaten, with its flavour depending largely upon the ingredients used and its manufacturing environment. It is similar to Camembert, which is native to a different region of France. Brie typically contains between 60% and 75% butterfat, slightly higher than Camembert.
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.
Camembert is a moist, soft, creamy, surface-ripened cow's milk cheese. It was first made in the late 18th century in Camembert, Normandy, in northwest France. It is sometimes compared in look, taste and texture to brie cheese, albeit with a slightly lower butterfat content than brie's typical 20% – 25% by weight.
Colby is a semihard orange cheese made from cow's milk. It is named after the city of Colby, Wisconsin, USA, where it was first developed in 1885 and quickly became popular. Today the cheese is typically used in snacks, sandwiches, and salads.
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.
Blue cheese is any of a wide range of cheeses made with the addition of cultures of edible molds, which create blue-green spots or veins through the cheese. Blue cheeses vary in taste from very mild to strong, and from slightly sweet to salty or sharp; in colour from pale to dark; and in consistency from liquid to hard. They may have a distinctive smell, either from the mold or from various specially cultivated bacteria such as Brevibacterium linens.
Neufchâtel is a soft, slightly crumbly, mold-ripened, bloomy-rind cheese made in the Neufchâtel-en-Bray region of Normandy. One of the oldest kinds of cheese in France, its production is believed to date back as far as the 6th century AD, in the Kingdom of the Franks. It looks similar to Camembert and Brie, with a dry, white, edible rind, but the taste is saltier and sharper. Unlike other soft-white-rinded cheeses, Neufchâtel has a grainy texture. It is usually sold in heart shapes but is also produced in other forms, such as logs and boxes. It is typically matured for 8–10 weeks and weighs around 100–600 g (3.5–21.2 oz).
Gubbeen Cheese is a surface ripened, semi-soft, cow's milk cheese with a pink and white rind. The flavours are creamy with mushroom and nutty aftertastes but vary depending on maturity of cheese. Gubbeen Farmhouse Products also produce a Smoked Gubbeen.
Maredsous is a semi-hard loaf-shaped washed-rind cheese made from cow's milk. It is suitable for slicing, and characterised by an orange coloured rind. The cheese has been produced in France since 1953.
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.
Caprino is an Italian cheese traditionally made from whole or skimmed goat's milk. The name of the cheese derives from the Italian word for goat, capra. With modern methods of production, the cheese is made from cow's milk as well or a combination of both cow's and goat's milks. The two major styles of caprino are fresco ("fresh") and stagionato ("aged").
Cheese ripening, alternatively cheese maturation or affinage, is a process in cheesemaking. It is responsible for the distinct flavour of cheese, and through the modification of "ripening agents", determines the features that define many different varieties of cheeses, such as taste, texture, and body. The process is "characterized by a series of complex physical, chemical and microbiological changes" that incorporates the agents of "bacteria and enzymes of the milk, lactic culture, rennet, lipases, added moulds or yeasts, and environmental contaminants". The majority of cheese is ripened, except for fresh cheese.
Washed-rind or smear-ripened cheeses are cheeses which are periodically treated with brine or mold-bearing agents. This encourages the growth of certain bacteria on their surface which give them distinctive flavors. There are hard and soft washed-rind cheeses. The softer ones are sometimes distinguished as "smear-ripened". Conversely, the term "washed rind" is sometimes reserved only for the hard ones.
Berner Alpkäse is a hard cheese produced in the Alps of the Bernese Oberland and adjacent areas of Switzerland. It is classified as a Swiss-type or Alpine cheese, and is a spicy, full-fat, raw milk cheese without holes. The cheese is manufactured exclusively with manual labour, usually on a wood fire. An extra-hard variety of Berner Alpkäse, known as Berner Hobelkäse, is aged for at least two years and it is this variety that is most widely available. Both Berner Alpkäse and Berner Hobelkäse are certified as AOPs in Switzerland.
Swiss-type cheeses, also known as Alpine cheeses, are a group of hard or semi-hard cheeses with a distinct character, whose origins lie in the Alps of Europe, although they are now eaten and imitated in most cheesemaking parts of the world. Their distinct character arose from the requirements of cheese made in the summer on high Alpine grasslands, and then transported with the cows down to the valleys in the winter, in the historic culture of Alpine transhumance. Traditionally the cheeses were made in large rounds or "wheels" with a hard rind, and were robust enough for both keeping and transporting.
Brined cheese, also sometimes referred to as pickled cheese for some varieties, is cheese that is matured in brine in an airtight or semi-permeable container. This process gives the cheese good stability, inhibiting bacterial growth even in warmer climates. Brined cheeses may be soft or hard, varying in moisture content and in colour and flavour according to the type of milk used. However, all are rindless and generally taste clean, salty and acidic when fresh, developing some piquancy when aged; most are white.