Historical clue formulations

• Ketchup brand — 2022-01-16
• Pittsburgh-based food company — 2018-07-22
• Big name in 35-Down — 2015-12-27
• "57 Varieties" brand — 2015-09-09
• The Steelers' ___ Field — 2015-04-10
• It's known for its varieties — 2013-07-20
• Ore-Ida parent company — 2011-09-27
• Pittsburgh-based food giant — 2011-09-25
• "57 Varieties" company — 2003-04-02
• Big pickle producer — 2003-03-30
• Ketchup brand — 2002-01-14
• Pickle producer — 2001-02-23
• Brand name at picnics — 1997-10-05