Journals

Guides, brewing notes and research from O2H TEA — how to choose, brew and actually enjoy Asian teas, written for Australian drinkers. No ceremony, no gatekeeping, no jargon.

All oolong pu-erh green tea white tea chenpi loose leaf tea brewing digestion gut health sleep teaware tea gifts Melbourne black tea
Does Tea Stain Teeth? — O2H TEA guide to per-tea staining risk
Does Tea Stain Teeth? Per-Tea Risk + 6 Ways to Prevent (Dentist-Cited)

Quick answer: Yes — tea can stain teeth. The cause is tannins, plant polyphenols that contain colour-producing chromogens which bind...

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Xiao Qing Gan: All Four — O2H TEA Tangerine Serenade set among green tangerines
Tangerine Pu-erh vs Oolong vs White vs Black: Xiao Qing Gan 4-Way (2026)

Quick answer: The classical xiao qing gan (小青柑) tradition pairs young green tangerines with aged shou pu-erh. O2H TEA is...

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