From The cRc: Unflavored Orange Pekoe or Green Tea Leaves

In Important Alerts, Newsletter Items by kosherqu

print
Unflavored Orange Pekoe or Green Tea Leaves (including matcha) or tea bags are acceptable without Hashgacha if they contain no other ingredients.  Flavored or herbal tea leaves or bags require Kosher certification.  Earl Grey with bergamot oil is acceptable without Hashgacha, but Earl Grey tea with bergamot flavor requires  Kosher certification.  All of the above is limited to tea leaves and tea bags, but all prepared (liquid) tea or instant tea powder sold in retail containers requires Kosher certification.l