Only Abe can produce such hokum (7)
I believe the answer is:
baloney
'hokum' is the definition.
(I've seen this in another clue)
'only abe can produce' is the wordplay.
'can produce' indicates an anagram (I've seen this in other clues).
'only'+'abe'='onlyabe'
'onlyabe' anagrammed gives 'BALONEY'.
'such' acts as a link.
(Other definitions for baloney that I've seen before include "Nonsense; lean yob (anag)" , "foolish talk!" , "Cobblers" , "Tripe < , smoked sausage" , "rhubarb" .)