Historical clue formulations

• Old-fashioned butter maker — 2026-01-19
• Roil — 2024-10-20
• Turn from cream to butter — 2023-11-27
• Butter maker — 2023-04-16
• Mass-produce, with "out" — 2018-02-10
• Milk shaker? — 2016-11-20
• Butter maker — 2016-10-26
• Make butter the old-fashioned way — 2015-06-29
• Antique farm device — 2009-02-17
• Agitate — 2007-06-29
• Butter maker — 2006-01-03
• Butter maker — 2003-11-03
• Produce hurriedly, with "out" — 2003-10-07
• Butter maker — 2002-02-04
• Old-fashioned farm apparatus — 2001-02-23
• Agitate — 1998-12-24
• Make butter the old-fashioned way — 1995-12-04