This Oolong is a darker version of our light Iron Buddha oolong. Oxidised for longer than the light, it has a softer, earthy quality and fuller body. Smooth, dark and enticing in every infusion! Caffeine Level: Medium Country of Origin : China. Ingredients : Oolong tea. Steeping Suggestions: Use one teaspoon of tea (3g) per 6oz cup of water. Steep at 87°C (180°F) for 1-2 minutes per infusion.