Dropping Detritus From a Cigar

This page is the CodyCross answer for the clue below from Time for a check-up, Group 1709, Puzzle 5 (Antiseptic).

Question is: Dropping Detritus From a Cigar

and the answer is: ASHING

Word Meaning:

ASHING — (analytical chemistry) An analytic procedure in which a sample is heated in a furnace to leave a residue of ash, either to determine the gross mineral content, or as a preparation for further analysis

Definitions from Wiktionary.