Spot one going in to get something to eat (6)
I believe the answer is:
plaice
'something to eat' is the definition.
(plaice is a kind of food)
'spot one going in' is the wordplay.
I cannot really understand how this works, but
'one' could be 'i' (Roman numeral) and 'i' is present in the answer.
'spot' could be 'place' (synonyms) and 'place' is located in the leftover letters.
No letters remain.
This may be the basis of clue (or it may be nonsense).
'to get' is the link.
Can you help me to learn more?
(Other definitions for plaice that I've seen before include "Tasty flatfish I place here" , "Flat fare" , "Brown flatfish" , "A fish; sounds like put" , "Important food fish" .)