Yame Premium Matcha The quality of our matcha is proven by the increasing demands from the ceremonial tea masters in Japan. Hoshino-en, the producer of our matcha constantly wins the top award in the luxury tea category. Matcha is a good source of EGCG(strong antioxidant) and L-theanine(non-drowsy calmative). The perfect balance of caffein and L-theanine provides with jitter-free mental energy and focus without crash.