Explosive sausage? (6)
I believe the answer is:
banger
I believe this clue is a double definition.
'explosive' is the first definition.
(I've seen this before)
'sausage?' is the second definition.
(banger is a kind of sausage)
(Other definitions for banger that I've seen before include "Meaty" , "Explosive" , "Sausage (Inf)" , "Old and unreliable car" , "Sausage, firework and old car" .)