Historical clue formulations

• Plant with psychoactive leaves — 2026-01-17
• Andean stimulant — 2025-09-07
• Stimulant crop of South America — 2025-03-30
• Source of a South American herbal tea — 2024-10-19
• ___-Cola — 2024-02-19
• Half a soft drink? — 2023-12-06
• Cash crop of South America — 2022-07-23
• Plant cultivated by the Incas — 2022-04-24
• Lucrative South American crop — 2019-02-19
• Part of a white script on a red can — 2019-01-31
• South American cash crop — 2017-04-16
• Cash crop in Colombia — 2016-08-24
• Natural stimulant — 2016-08-04
• Colombian crop — 2016-06-03
• ___-Cola — 2015-10-05
• Bolivian export — 2015-03-14
• Something to chew on — 2012-06-29
• Andean stimulant — 2012-03-28
• Chewed stimulant — 2012-01-15
• Chewed stimulant — 2009-04-19
• It's cultivated in the Andes — 2008-11-23
• ___ leaf — 2008-09-19
• Drug-yielding plant — 2007-10-30
• Chewed stimulant — 2006-02-11
• ___-Cola — 2004-09-20
• Pioneer of TV comedy — 2004-03-12
• Best Actress Emmy winner of 1951 — 2003-08-09
• Cola's beginning — 2003-05-27
• ___-Cola — 2002-06-17
• "Your Show of Shows" regular — 2001-11-27
• Kind of leaves — 2001-07-04
• 1951 Best Actress Emmy winner — 2000-07-30
• With 42-Across, a popular 1886 creation — 2000-05-24
• Chewed stimulant — 1999-11-26
• She found success with Caesar — 1999-08-22
• Imogene of early TV — 1999-05-19
• Caesar's partner — 1998-12-04
• Andean shrub — 1997-09-26
• Caesar's sidekick — 1997-03-26
• Caesar's sidekick — 1996-12-07
• Caesar's partner in 50's TV — 1996-05-30
• Kind of leaf — 1995-11-04
• Stimulating shrub — 1995-07-16
• A Caesar partner — 1995-07-06
• Comic Imogene — 1995-03-09
• Caesar's partner in 50's TV — 1995-02-20
• Imogene of "Your Show of Shows" — 1994-11-30
• Caesar's partner — 1994-04-10
• Illicit leaves — 1993-11-28