Related Clues:

• Residue from Etna
• Volcano stuff
• Blaze remnant
• Canoe paddle material
• Memento of an old flame?
• Volcanic ejecta
• Grate buildup
• Volcanic product
• Burnt-log residue
• Elastic wood
• Grate expectation?
• Violent outburst
• Fire waste
• Eruption evidence
• A smoker may flick it off