The full-bodied, dark roast oolong warms you up brightly with the help from both floral and fruity osmanthus flowers. Caffeine Level: Medium. Country of Origin: China. Ingredients: Oolong tea. Steeping Suggestions: 1 teaspoon of tea (4g) per 125ml(8oz) cup of water, 95°C (203°F) for 40 seconds. Add time after 3rd infusion.