Editor’s Note: This CNN Travel series is, or was, sponsored by the country it highlights. CNN retains full editorial control over subject matter, reporting and frequency of the articles and videos within the sponsorship, in compliance with our policy . Bangkok CNN  —  There are said to be more than 200 types of mangoes grown in Thailand. But when it comes to creating one of the country’s most beloved desserts , khao nieow mamuang, connoisseurs say few varieties will do. Better known to the rest