Seconds from igniting bonfire, logs become pulp (3)
I believe the answer is:
goo
'pulp' is the definition.
(thesaurus)
'seconds from igniting bonfire logs become' is the wordplay.
I cannot really see how this works, but
'from' could be 'o' (I've seen this in other clues) and 'o' is found within the answer.
'become' could be 'go' (eg to go rotten is to become rotten) and 'go' is located in the answer.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for goo that I've seen before include "Sticky substance (sl.)" , "syrup" , "Slime" , "Sticky gunge" , "Sticky stuff or sickly sentiment" .)