The most common and most likely answer to this crossword clue is the 3 plus 2 letter word EAT UP
I've seen this crossword clue in The Guardian
E
A
T
U
P
More clues leading to the result EAT UP
- In husband’s absence, warm through and polish off
- Warm starter’s left to finish off
- Added rolls after central part of meal – don’t leave any
- Finish your meal with some Costa espressos
- Enid is to put it away
- Entirely consume “repast” – gulp regularly?
- Finish relish
- Finish your food, Enid
- Advice to consumer
- Opium trade regularly brought over gorge
Buddy explains!

The straight part
We know that "Finish your meal" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case finish your meal = eat up.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.