Itohen japanese roasted tea 50 tea bags

Case of hot water; Put one tea bag in a cup and pour 200c boiled water. After leaving 20 seconds, swing tea bag up and down until desired consistency(taste) is reached.
Case of cold water; Put one tea bag in a pot and pour 500cc cold water. After leaving 1〜2 hours, stir it until desired consistency(taste) is reached.