This roasted Japanese green tea is exceptional! Beautifully balanced, roast-toasty, and silky smooth, it is cozy comfort in a cup. Caffeine Level: Low Caffeine. Country of Origin: Japan. Ingredients: Roasted green tea. Steeping Suggestions: 1 teaspoon of tea (2g) per 6oz cup of water, 90°C (194°F) for 4-5 minutes.