Nabisco’s Oreo is the No. 1 cookie in America.

But as the company found out, you can’t just import it into China and expect it to be No. 1 there as well.

In this insightful piece from the smart folks at Natonal Public Radio’s Planet Money team, read how the Oreo conquered China. Please click here to read it.

(One of the strategies the article talks about is running commercials in China to teach the Chinese how to dunk Oreos in milk. A copy of that spot is below.)