Historical clue formulations

• Add and then stir — 2017-10-18
• Add with a beater — 2016-05-20
• Recipe instruction — 2015-01-30
• Recipe instruction — 2014-02-23
• Recipe instruction — 2013-11-28
• Add to, then stir — 2005-06-19
• Recipe phrase — 2004-12-24
• Add, as an ingredient — 2001-02-13
• Add to the stewpot — 1995-12-23