Historical clue formulations

• Something that may be passed down in a family — 2024-11-23
• A cook might have a secret one — 2022-12-12
• Family secret, perhaps — 2020-11-15
• Instruction for a course? — 2020-11-08
• Chef's creation — 2020-05-17
• Contents of many an index card — 2020-01-22
• Something with a stirring message? — 2017-12-15
• Secret ___ — 2017-08-19
• It might have a stirring part — 2015-03-11
• It might tell you to chill — 2015-03-07
• Family secret, perhaps — 2010-05-02
• Betty Crocker offering — 2009-02-02
• It can cause a stir — 2001-11-18
• Formula — 2001-08-04
• Blueprint — 1996-06-21
• Formula — 1995-05-20