Historical clue formulations

• Biological catalyst — 2024-05-21
• RNA polymerase, e.g. — 2022-08-07
• Food processor — 2019-03-02
• Brewing agent — 2017-09-23
• Food processor? — 2014-01-09
• Cause of a breakdown — 2011-12-04
• It may cause a breakdown — 2006-03-16
• Trypsin, e.g. — 2002-05-19
• Pepsin, e.g. — 2002-01-14
• Pepsin, e.g. — 2001-07-23
• Catalyst of a sort — 2000-08-24
• Pepsin, for one — 1998-12-11
• It causes a breakdown — 1998-02-27
• Pepsin, for one — 1995-03-01