Soup kitchen? (9)

I believe the answer is:

stockroom

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

'soup kitchen?' is the definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Maybe they are linked in a way I don't understand?

'soup kitchen?' is the wordplay.
'soup' becomes 'stock' (stock is a kind of soup).
'kitchen?' becomes 'room' (kitchen is a kind of room).
'stock'+'room'='STOCKROOM'

Can you help me to learn more?

(Another definition for stockroom that I've seen is " Where goods are stored".)

I've seen this clue in the Evening Standard.

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