Fabric in ashes after explosion (7)
I believe the answer is:
hessian
'fabric' is the definition.
(I have seen 'Coarse fabric' mean 'hessian' so perhaps 'fabric' could also mean 'hessian')
'in ashes after explosion' is the wordplay.
'after' is a charade indicator (letters next to each other).
'explosion' is an anagram indicator.
'in'+'ashes'='inashes'
'inashes' with letters rearranged gives 'HESSIAN'.
(Other definitions for hessian that I've seen before include "Cloth for sacking" , "Coarse fabric used in sacks" , "Cloth made from jute" , "sackcloth?" , "Coarse jute fabric" .)