Related Clues:

• Vesuvius product
• Cigar byproduct
• Camel by-product
• Phoenix's origin
• Flicker's bit
• Camel droppings?
• Chimney residue
• Post-magma?
• Bone china component
• Bonfire leftovers
• Lenten symbol of penitence
• Fire leftovers
• Bat wood, typically
• Molten flow
• Eruption particle