Kind of date in store – belly's out of shape (4-2)

I believe the answer is:

sell-by

I'm a little stuck... Click here to teach me more about this clue!

'kind of date in store' is the definition.
I don't know anything about this answer so I cannot tell whether this works.

'belly's out of shape' is the wordplay.
'out of shape' indicates an anagram.
'bellys' with letters rearranged gives 'SELL-BY'.

Can you help me to learn more?

I've seen this clue in The Guardian.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.