Yellow Teas are some of the rarest teas of all. There are fewer than a dozen and many of the famous Yellow Teas have actually been made as green teas in recent times. True Yellow teas must undergo a specific "yellowing" step which allows for natural, but controlled oxidation while the leaves are heaped or bundled. The Yellow Tea process is actually one of the oldest methods of tea making though the actual skills are now in danger of being lost. Yellows offer deeper tones with less vegetal qualities but yet lighter than oolongs or blacks. Yellow teas are thought to be very good for health.