Historical clue formulations

• Sweet Japanese rice cake that may be filled with ice cream — 2026-03-24
• Traditional rice cake snack on Japanese New Year — 2026-02-18
• Japanese rice cake — 2025-07-24
• Traditional treat in Japanese New Year celebrations — 2025-04-26
• Chewy Japanese dessert — 2024-12-08
• Japanese rice cake often filled with ice cream — 2024-07-03
• Glutinous rice cake of Japan — 2019-05-09