Buy oolong tea online in loose leaf & pyramid tea bags at best price from Fernweh Agro, online tea store. Fernweh Agro offers finest whole leaf oolong teas in loose leaf and pyramid tea bag form. One of the lesser-known varieties, oolong tea has just 2% of the total consumption across the globe. A zero-calorie beverage, it contains some amounts of caffeine with ample antioxidants. It is made from the same plant as black tea and green tea. Depending on how the tea leaves are processed, its brewing methods will vary.