Historical clue formulations

• Flame proof? — 2026-08-28
• Flame's remains — 2026-07-30
• Bonfire remains — 2026-07-28
• ___ Wednesday — 2026-07-27
• Shade of gray — 2026-06-13
• Volcanic spew — 2026-05-25
• Forehead marking at the start of Lent — 2026-04-08
• Cigar residue — 2026-04-07
• It's flicked from a cigarette — 2026-04-06
• Hardwood tree … or what's left after it burns — 2026-03-10
• Tree of life, in Norse mythology — 2026-02-14
• Campfire residue — 2026-02-05
• It goes down in flames — 2026-01-28
• "Avatar: Fire and ___" (2025 film) — 2026-01-10
• Volcanic coating that buried Pompeii — 2026-01-05
• Forehead marker at the start of Lent — 2025-12-03
• Palm Sunday remnant used on the first Wednesday of Lent — 2025-11-13
• Wood found in restaurant furniture — 2025-10-12
• Firewood choice, or its destiny — 2025-09-27
• Evidence of a fire — 2025-08-29
• Certain tray's contents — 2025-08-23
• Shade of gray or blond — 2025-08-12
• Campfire residue — 2025-07-08
• Volcanic output — 2025-06-17
• Unwanted "ingredient" when assembling s'mores, say — 2025-06-05
• Neutral color — 2025-05-17
• *Hasty — 2025-04-17
• ___ Ketchum, "Pokémon" protagonist — 2025-04-07
• Fireplace residue — 2025-03-05
• Cigarette byproduct — 2025-01-13
• Pizza oven residue — 2024-12-26
• Tree with so-called helicopter seeds — 2024-12-12
• Pale wood — 2024-10-09
• Stuff in Santa's footprints — 2024-10-01
• It can come before Wednesday — 2024-09-12
• Incense residue — 2024-07-16
• Vape's lack — 2024-06-20
• Volcanic debris — 2024-06-05
• Cigar residue — 2024-05-13
• Pale shade of gray — 2024-05-07
• Wood commonly used in mid-century modern furniture — 2024-04-18
• Campfire remains — 2024-03-10
• Wildfire debris — 2023-12-31
• Volcanic residue — 2023-12-05
• Volcanic cloud component — 2023-12-04
• Flick of a flicker? — 2023-11-23
• Wood once used for hockey sticks — 2023-11-22
• ___ Wednesday — 2023-11-14
• Ingredient in Roman concrete — 2023-09-20
• Wood for a baseball bat — 2023-09-19