Sausage — small amount — more's consumed — entirety knocked back (10)
I believe the answer is:
mortadella
'sausage' is the definition.
(I've seen this before)
'small amount more's consumed entirety knocked back' is the wordplay.
'small amount' becomes 'tad' ('a tad' is a small amount).
'consumed' indicates putting letters inside (inserted letters get consumed).
'entirety' becomes 'all' (I've seen this in another clue).
'knocked back' says the letters should be written backwards.
'all' reversed gives 'lla'.
'tad' inserted inside 'more' is 'mortade'.
'mortade'+'lla'='MORTADELLA'
(Another definition for mortadella that I've seen is " Sausage".)