Ash is another name for cigar residue.
a cigarette
A cigar.
Another word for fuel residue is "residual fuel."
Cigar was named not for the tobacco product, but for a navigational intersection for airplanes. -Wikipedia
cigarette: Small cigar
The accepted scientific name is Coleophora laticornella.
Drew Estate used to make the Kahlua cigar, but lost the licensing right to use the brand name Kahlua. The good news is they continue to make the cigar under their own brand name Tabak Especial. It is the exact same cigar as the Kahlua. Most premium cigar shops should have it.
Beer
Residue or remnants.
Remainder is a word for residue. Additional synonyms include debris, leftovers, remains, silt, slag and waste.
A hamlet is an old name for a small village. It is also the name of a cigar and a play.
Ammonium nitrate leaves no residue when heated:NH4NO3 Δ→ N2O + 2H2O