Scotch flavorer (4)
I believe the answer is:
peat
'scotch flavorer' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for peat that I've seen before include "Tape (anag.)" , "Form of fuel" , "Partially carbonised vegetable matter saturated with water" , "Bog material" , "Decomposed vegetable matter" .)