Historical clue formulations

• Intermittently offered fast-food pork sandwich — 2026-05-05
• Fast-food pork sandwich with its own locator website — 2025-03-04
• Fast-food pork sandwich — 2022-08-15
• Periodically sold fast-food item — 2021-01-11
• Intermittently available fast-food sandwich — 2020-11-02
• Fast-food sandwich not available in Muslim countries — 2017-02-26
• Fast-food debut of 1981 — 2016-11-11
• Fast-food debut of 1981 — 2013-08-09
• Sloppy fast-food sandwich — 2013-03-17
• Drive-thru sandwich order — 2011-12-25