Hand Roasting Green Tea – Wenzhou, China May 20, 2012 by Gaucho888 Hand Roasting Long Jing. The metal pot is heated by electricity and green tea has short contact time with the heated surface. The color change is the indication of the roasting degree. The aroma is non descriptive... Share this:FacebookEmailTumblrTwitterPinterestRedditMoreLinkedInLike this:Like Loading...