美国国家公共电台 NPR Milk! The 'Most Over-Argued Food In History'（在线收听）

LULU GARCIA-NAVARRO, HOST:

Milk, that humdrum household staple, has been at the center of some of today's big food fights. And some of those arguments over the importance of breast feeding, the healthiness of milk, even which animals make the best milk go back thousands of years. My guest, Mark Kurlansky, calls it the most argued-over food in human history. And he covers that history in his new book, "Milk!" He joins us today from New York. Thanks so much.

MARK KURLANSKY: Thank you.

GARCIA-NAVARRO: So much of our nation's food is made from dairy, which is, of course, milk. But you point out that humans are the only mammals that drink milk past weaning.

KURLANSKY: Naturally, yes. Yes. I have to admit that I feed milk to my cats, but...

(LAUGHTER)

GARCIA-NAVARRO: You're not supposed to do that.

KURLANSKY: No.

GARCIA-NAVARRO: I know that to be true. I have a cat.

KURLANSKY: I know.

GARCIA-NAVARRO: They are oddly also lactose intolerant.

KURLANSKY: Well, you know, we're all supposed to be. We aren't meant to have milk past weaning. There is an enzyme called lactase, which deals with the lactose, which is a sugar that's in milk. And after a certain age in humans, about the age of 2, we stop producing it, and then we can't digest lactose. But for some reason, a genetic aberration, which took place particularly in Europe, kept the lactase so that we could keep drinking milk. This is actually not normal. And even today, even though the number of people with this condition is growing, it's still only something like 40 percent of the human population that can drink milk.

GARCIA-NAVARRO: Yeah. In fact, I'm Hispanic. Our producer is of Pakistani descent, and our editor is of Vietnamese descent. And when we were talking about this book, we were all like, yeah, we're lactose intolerant.

KURLANSKY: Yeah. Yeah.

(LAUGHTER)

GARCIA-NAVARRO: So it made the point quite nicely. But milk has become this global food industry. How did that happen, briefly?

KURLANSKY: It happened slowly. And for a very long time, very few people drank milk because, for reasons that people didn't understand, you got sick from milk if it stood around too long. You know, it was basically just people who lived on farms who drank milk, which is why it was sort of looked down upon. Like, the Romans looked down upon Northern Europeans for drinking milk because it was considered a backwards thing because where they came from, only farmers did it. And it really wasn't until 18th century that liquid milk started to become traded product.

GARCIA-NAVARRO: Yeah. And then they learned how to pasteurize, obviously.

KURLANSKY: One of the mysteries I solved for myself when I was researching this book is - you know, since Louis Pasteur invented pasteurization, why aren't the French more into it?

GARCIA-NAVARRO: Good question.

KURLANSKY: And then I came to realize that Pasteur wasn't trying to pasteurize milk. He was actually trying to pasteurize wine, which seems much more French. But the process was adopted for milk. And the reason it was adopted is that infant mortality was horrendous - something like over half the deaths in cities were people under 5 years old. And they came to understand that this was from milk, and pasteurization solved that problem.

GARCIA-NAVARRO: There are movements that push to make milk production more humane for the animals involved, primarily cows. There's also a push from the non-GMO, hormone-free and organic farming movements. In your opinion, what is the future of milk?

KURLANSKY: Well, that is what farmers are trying to work out. Their problem is that there is a set price for milk in the U.S., fixed by the government. In different countries, like in Australia, it's fixed by supermarkets. But there seems that everywhere there's a fixed price for milk, and the price isn't nearly high enough. And you can charge more, but nobody will buy it because they can get this other lower-priced milk. But then there's all these other issues. Some people will pay more money for milk if it's GMO-free or if it's organic, but there's a catch. Usually, these things make the milk much more expensive to produce.

GARCIA-NAVARRO: So, I've got a personal question for you. Your book touches on many different types of animal milk - cow, buffalo, camel, yak. What's your favorite?

KURLANSKY: Ah. You know, for drinking milk - and I have to confess I'm not a big milk drinker - you know, we're kind of used to drinking cow milk.

GARCIA-NAVARRO: You buried the lead there, Mark.

KURLANSKY: Yeah, sorry. Cow milk is kind of bland. And we're kind of used to bland. So if you have sheep milk or goat milk or camel milk - which actually tastes oddly similar to sheep milk - it has this other dimension of flavor, which is kind of nice if it doesn't shock you. When you get into things like cheese and yogurt, yak yogurt, which I don't think you can get anywhere but in Tibet, and in Tibet...

GARCIA-NAVARRO: I have had it.

KURLANSKY: Have you? Did you get it in Tibet?

GARCIA-NAVARRO: I did.

KURLANSKY: Yak yogurt - isn't it wonderful?

GARCIA-NAVARRO: Mm.

KURLANSKY: I love it.

GARCIA-NAVARRO: Recommendations from Mark Kurlansky. His new book is "Milk!" Thank you so much for joining us.

KURLANSKY: My pleasure.