Terminology Chasen A bamboo whisk for stirring matcha and hot water in the drinking bowl Chashaku A bamboo spoon for scooping tea powder from its container (chaire or natsume) Chaire A container for storing koicha powder; made of ceramics Natsume A container for storing usucha powder; usually lacquerware Ro A square hearth that is dug in the tatami floor for building fire with charcoal Furo A po..