Historical clue formulations

• Green trattoria topping — 2024-05-05
• Contents of a pizzeria shaker — 2024-04-30
• Trattoria staple — 2022-05-29
• Common herb in pizza — 2022-01-10
• Herb of PBS's "Ciao Italia" — 2017-05-06
• Sauce seasoning — 2016-05-20
• Common pizza seasoning — 2015-07-08
• Purple-flowered perennial — 2014-05-23
• Pizzeria supply — 2014-01-03
• Greek salad ingredient — 2013-09-13
• Cousin of catnip — 2009-09-26
• Greek salad ingredient — 2009-08-29
• Catnip relative — 2006-11-25
• Sauce ingredient — 2004-04-02
• Pizza ingredient — 2000-09-17
• Mint family member — 1999-12-23
• Stew seasoning — 1994-11-20
• Spaghetti sauce seasoning — 1994-07-09