The behind-the-scenes tales of hit products and creations from Japan: this is Japan's Top Inventions. This time, bottled green tea: green tea sold in bottles made from PET plastic. Loved in over 30 countries and regions, it was developed by a Japanese beverage maker in 1990 using special techniques to keep the tea tasting great when bottled. We dive into the little-known story behind this drink, which is expanding worldwide among health-conscious consumers, and learn about the latest versions.