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B1 中级 英语 5:34 Educational

A brie(f) history of cheese - Paul Kindstedt

TED-Ed · 20,136,550 次观看 · 添加于 3 周前

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00:07

Before empires and royalty,

00:09

before pottery and writing,

00:11

before metal tools and weapons –

00:14

there was cheese.

00:16

As early as 8000 BCE,

00:18

the earliest Neolithic farmers living in the Fertile Crescent

00:23

began a legacy of cheesemaking

00:25

almost as old as civilization itself.

00:29

The rise of agriculture led to domesticated sheep and goats,

00:33

which ancient farmers harvested for milk.

00:36

But when left in warm conditions for several hours,

00:39

that fresh milk began to sour.

00:42

Its lactic acids caused proteins to coagulate, binding into soft clumps.

00:47

Upon discovering this strange transformation,

00:50

the farmers drained the remaining liquid –

00:53

later named whey –

00:54

and found the yellowish globs could be eaten fresh as a soft, spreadable meal.

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