Food in tum digested and forgotten (3,2,4)
I believe the answer is:
out of mind
'digested and forgotten' is the definition.
I can't judge whether this defines the answer.
'food in tum' is the wordplay.
'food in tum' anagrams to 'OUT OF MIND'.
But, I'm not sure how the anagram is indicated.
Can you help me to learn more?
(Other definitions for out of mind that I've seen before include "Mad" , "forgotten?" .)