Historical clue formulations

• Designation for a potato — 2026-07-01
• Modern ending with You — 2026-03-18
• Potato, yam or cassava — 2024-10-13
• Rutabaga, for one — 2024-01-26
• Cassava, for one — 2017-11-05
• Tapioca or taro root — 2016-03-15
• Yam, e.g. — 2015-08-02
• Yam, e.g. — 2012-01-26
• Yam or taro — 2009-07-08
• Arrowroot, e.g. — 2006-11-11
• Water chestnut, e.g. — 2005-08-26
• Jerusalem artichoke, e.g. — 2005-02-12
• Jerusalem artichoke, e.g. — 2003-07-18
• Water chestnut, e.g. — 2001-07-15
• Jerusalem artichoke, e.g. — 2000-12-22
• Potato, for one — 2000-05-08
• Jerusalem artichoke, e.g. — 1997-09-28