Historical clue formulations

• Edible wrapper — 2024-06-01
• Sushi wrapper — 2023-05-16
• Macroalgae — 2022-06-05
• Hijiki or arame, in a Japanese restaurant — 2020-11-13
• Major source of oxygen in the earth's atmosphere — 2020-05-24
• Japanese salad green — 2018-08-01
• Sushi covering — 2008-03-15
• Irish moss, e.g. — 2005-03-04
• Jelly plant — 2004-07-02
• Iodine source — 2002-01-03
• Ocean oxygen source — 2001-06-23
• Iodine source — 2001-02-12
• Sushi wrap — 1999-05-06
• Health enthusiast's dish — 1996-01-02
• Natural fish food — 1995-06-05