Cheese comes from milk. More precisely, it comes from separating the solid proteins and fats in milk from the liquid, then shaping and often aging those solids into the thousands of varieties found around the world. Most cheese starts with cow’s milk, but goat, sheep, buffalo, and even more unusual animals like yaks and camels contribute milk for cheesemaking in different regions.
The Milk Behind the Cheese
Cow’s milk is the most common starting point, largely because cows produce it in high volumes and it has a favorable balance of fat and protein for cheesemaking. The majority of cheddar, gouda, mozzarella-style, and Swiss cheeses begin here.
Goat’s milk produces cheeses with a distinct, tangy complexity. Fresh goat cheese (chèvre) is the most recognizable example, with a soft, creamy texture. Sheep’s milk is higher in fat and lactose than cow’s milk, which makes it ideal for rich, dense cheeses like Roquefort, Pecorino Romano, and Manchego. You rarely see sheep’s milk sold as a drink, but it’s a powerhouse for cheesemaking. Buffalo milk, prized for its high fat content, is the traditional base for authentic mozzarella di bufala. It’s harder to source, which is why buffalo mozzarella costs more and tastes noticeably creamier than versions made with cow’s milk.
How Milk Becomes Cheese
Every cheese starts with the same fundamental transformation: the proteins in milk are forced to clump together into a solid mass, trapping fat and minerals along the way. This process is called coagulation, and there are three main ways to trigger it.
The most common method uses rennet, an enzyme traditionally sourced from the stomachs of young ruminant animals (though microbial and plant-based versions now exist). Rennet targets casein, the primary protein in milk, and causes it to form a gel-like structure. The second method relies on acid alone. Bacteria are added to milk to ferment its natural sugar (lactose) into lactic acid, which gradually causes the proteins to bond together. Fresh cheeses like cottage cheese and cream cheese are often made this way. The third method combines acid with heat, which is how ricotta and paneer are produced.
Once coagulation happens, the solid portion (curd) separates from the liquid (whey). Cheesemakers cut, stir, heat, or press the curds to expel more whey, and this step has an enormous influence on the final texture. A cheese where very little whey is removed stays soft and moist. A cheese that’s pressed firmly and drained thoroughly becomes hard and dense. Salt is added either by mixing it directly into the curds or by soaking the shaped cheese in brine, and it serves double duty: flavoring the cheese and controlling the bacteria that will shape its character during aging.
What Aging Does to Flavor and Texture
Fresh cheeses like mozzarella or ricotta are eaten within days of being made. Aged cheeses, on the other hand, spend weeks, months, or even years ripening under carefully controlled conditions. During this time, bacteria, yeasts, and molds break down proteins and fats into smaller molecules that produce complex flavors and aromas. The sharp bite of an aged cheddar, the nutty sweetness of Gruyère, the pungent funk of a washed-rind cheese: all of these develop during ripening, not during the initial cheesemaking.
Traditional cheesemakers figured out centuries ago that certain caves, cellars, and handling routines produced the best results, even though they didn’t understand why. What they were actually doing was selecting for specific microorganisms. Blue cheeses get their veins from mold deliberately introduced into the curds. Soft-ripened cheeses like Brie and Camembert develop their bloomy white rinds from a different type of mold that grows on the surface and gradually softens the interior from the outside in. The specific fungi, bacteria, and even the temperature and humidity of the aging environment all work together to create a cheese’s final personality.
A 7,500-Year-Old Invention
Cheesemaking is one of the oldest food technologies humans have developed. Archaeological evidence from pottery shards in what is now North Africa dates the practice to roughly 7,500 years ago. The discovery was likely accidental. In warm climates, milk stored in animal-stomach containers would have naturally curdled due to residual enzymes and ambient bacteria. Early herders probably noticed that the resulting solids were edible, portable, and lasted longer than fresh milk, which would have been a significant advantage for communities without refrigeration.
From those origins, cheesemaking spread across Europe, the Middle East, and Central Asia, with each region developing distinct traditions shaped by local animals, climates, and available caves or cellars for aging. France alone recognizes hundreds of named varieties. Italy, Spain, the Netherlands, Switzerland, and Greece each have deeply rooted traditions that continue today.
Where Cheese Is Produced Today
Global cheese production is heavily concentrated in two regions. The European Union produces about 47% of the world’s cheese, roughly 10.8 million metric tons per year. The United States comes second at around 29%, producing 6.6 million metric tons. After that, the numbers drop sharply: Russia accounts for about 5%, Brazil 4%, and Argentina 2%. The sheer scale of EU production reflects both the continent’s long cheesemaking history and the protected status many European cheeses enjoy, with strict rules governing where and how they can be made.
Plant-Based Alternatives
Not all products labeled as cheese come from animal milk. Plant-based cheese alternatives have been around longer than most people realize. Fermented tofu, which originated in China, has been consumed for roughly 1,500 years. In the late 1800s, John Harvey Kellogg (of cereal fame) developed nut-based products with a cream cheese-like consistency. By the early 20th century, soy-based alternatives were making their way from East Asia to Western markets.
Modern vegan cheeses typically rely on coconut oil for their fat base, since it’s solid at room temperature and mimics the mouthfeel of dairy fat. But the ingredient that has done the most to improve the taste and texture of plant-based cheese is the cashew nut. Cashews can be blended into a paste, fermented with bacterial cultures, and then flavored, producing something surprisingly close to a soft dairy cheese. A cashew-based cheese contains around 12 to 13 grams of protein per 100 grams, roughly half the protein in cheddar but comparable to eggs or prawns. The biggest gap between plant-based and dairy cheese remains casein, the protein responsible for the stretch and melt of mozzarella or the sharp snap of aged cheddar. No plant-based substitute has replicated it yet.