Crooked Leaf Tea Co. - Purple Bamboo Matcha Green Tea Chasen Whisk with 100 Tate (Prong) Purple bamboo matcha green tea chasen/whisk used for Japanese tea ceremony. Made from rare purple bamboo which is more durable than white bamboo. 100 - tate (prong) Ideal for ceremonies or casual home use to froth matcha to perfection. Shipped in a plastic, re-useable holding tube.