Crossword Genius

One takes stock as trains to station occasionally cancelled (7)

Ross

I believe the answer is:

risotto

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

'one takes stock' is the definition.
The definition and answer can be both things that one consumes for nourishment as well as being singular nouns.
Maybe they are linked in a way I don't understand?

'as trains to station occasionally cancelled' is the wordplay.
I cannot quite understand how this works, but
'as' could be 'so' (I've seen this in other clues) and 'so' is present in the answer.
'to' is present in the answer.
The remaining letters 'rit' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...

Can you help me to learn more?

(Other definitions for risotto that I've seen before include "dishy thing!" , "It has roots in Italian rice-based dish" , "Italian dish of rice, meat and vegetables" , "Rice/stock dish" , "Savoury rice dish" .)

I've seen this clue in The Independent.
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