Consumed portion of meat enthusiastically (5)
I believe the answer is:
eaten
'consumed' is the definition.
('eaten' can be similar in meaning to 'consumed')
'portion of meat enthusiastically' is the wordplay.
'portion of' indicates a hidden word.
'EATEN' is hidden within 'meat enthusiastically'.
(Other definitions for eaten that I've seen before include "Swallowed" , "Devoured" , "absorbed in the system" , "Gobbled" , "Polished off" .)