Historical clue formulations

• Made bubbly — 2022-05-01
• Like wine that's given a chance to "breathe" before drinking — 2021-04-20
• Made sparkling, say — 2019-04-20
• Exposed to oxygen — 2007-03-12
• Purified, as water — 2005-08-07
• Turned, as topsoil — 2003-05-30
• Poked holes in, say — 1999-07-22
• Charged with gas — 1999-04-26
• Made bubbly — 1996-02-02
• Bubbly — 1994-01-23