Historical clue formulations

• Traditional Chinese drink — 2021-02-21
• Tea choice — 2018-07-10
• Major Taiwanese export — 2016-02-12
• Chinese for "black dragon" — 2010-12-30
• It's between green and black — 2010-12-05
• Chinese brew — 2008-11-30
• Alternative to black or green — 2000-11-30
• Tea type — 2000-01-18
• Twinings product — 1999-06-26
• Oriental tea — 1994-08-16