By Stephanie Yang, CNN (CNN) — Jeffrey Cesari grew up eating ube, a purple yam native to the Philippines, whenever he visited his relatives there. But seven months ago, when he encountered it in a latte at a Turkish cafe, it suddenly sparked a business idea. The 31-year-old former auditor thought if people in Istanbul The post Inside the complex, secretive business of buying ube, the internet’s new favorite food appeared first on KTVZ.