Related Clues:

• Incinerator remnant
• Burning proof
• It might be mistaken for silver
• Like hard wood
• ___ Wednesday (start of 8-Down)
• Smoker's remains
• It's tapped into a tray
• Claro residue
• Wood for baseball bats
• Stuff from a volcano
• Grill remnants
• Wildfire side effect
• Smoking deposit
• Fire pit residue
• Grate content