Sign up for Unlocking the World, CNN Travel’s weekly newsletter. Get news about destinations, plus the latest in aviation, food and drink, and where to stay. World’s Most Expensive Rice Kinmemai Premium has been certified by Guinness World Records as the most expensive rice on the planet, but what makes it so special? Only 1,000 boxes of the Japanese grains are made each year, selling for around $73 each. Top-class, award-winning rice varieties are selected for flavor and texture, before their enzyme levels are tested for...