When and where did people first make cheese?
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Central Asia
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History of Cheese

Sliced cheese

If you don't have a refrigerator, there's no way to keep milk from going bad within a few hours. Even WITH a refrigerator milk goes bad in about a week. But ancient cows and sheep and goats only gave milk part of the year, right after they had had their babies in the spring. By mid-summer their milk had all dried up. And yet milk was an important source of fat and protein for many people. How could people manage to preserve this milk to be able to eat it in the fall and winter as well?

How to make cheese

They made the milk into cheese. The easiest kind of cheese to make is yogurt, which was very common in Central Asia and in India (and still is today). If you leave milk out on a sunny kitchen counter on a warm day, it will soon get all lumpy and turn into yogurt. This is because bacteria called yeast get into the milk from the air and eat it. Some bacteria are bad for you, or make the milk taste bad. But if you get the right kind of bacteria in your milk, it turns into good yogurt. The yeast eat the lactose in the milk (a kind of sugar), break down the lactose for energy inside the cell, and then poop out what is left over: lactic acid. The lactic acid changes the part of the milk that the bacteria don't eat: the protein. Normally protein molecules are curled up in balls, but the lactic acid makes the proteins unfold, and then they get tangled up with each other, making one solid lump.

Stacks of aging cheese
Aged cheese drying

Yogurt tastes good, and it will keep for a few days without being refrigerated, but it still won't keep all winter. Once people realized how to make yogurt, they began experimenting with other types of bacteria, and found that you can use different bacteria to make aged cheeses. People were making cheese in Poland by about 5500 BC. Some of these cheeses can be kept without being refrigerated for four or five years or even more. Swiss cheese is an example of an aged cheese that you might have eaten. Or cheddar cheese. Most aged cheese is made using rennet, a piece of the stomach lining of a cow. Indo-European people in Central Asia, the first to keep cows, may also have been the first to use rennet because they were carrying milk around in empty cow stomachs and accidentally curdled it.

Because you use cow rennet to make aged cheese, in India (where cows were sacred to Hindus) people mostly ate yogurt, rather than aged cheese.

You make cheese by adding a little bit of rennet to some milk, which makes it clump up and divide into curds and whey, and then straining out most of the whey, leaving solid curds (the milk you buy at the store will work fine! You can buy rennet pretty easily). It's pretty hard to make aged cheese, but if you are interested it is not very hard to make yogurt or ricotta cheese.

Learn by doing - making yogurt

Bibliography and further reading about cheese and cheese-making:

making great cheese

Cheese (Foods We Eat), by Linda Illsley (1991). What cheese is, explained for kids.

Making Great Cheese At Home: 30 Simple Recipes From Cheddar to Chevre, by Barbara Ciletti (2001).

Food in Antiquity: A Survey of the Diet of Early Peoples, by Don and Patricia Brothwell (1998). Pretty specialized, but the book tells you where foods came from, and how they got to other places, and what people ate in antiquity. Not just Europe, either!

More about Cows
How about Sheep?
Central Asian food
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Professor Carr

Karen Eva Carr, PhD.
Assoc. Professor Emerita, History
Portland State University

Professor Carr holds a B.A. with high honors from Cornell University in classics and archaeology, and her M.A. and PhD. from the University of Michigan in Classical Art and Archaeology. She has excavated in Scotland, Cyprus, Greece, Israel, and Tunisia, and she has been teaching history to university students for a very long time.

Professor Carr's PSU page

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