Crossword Genius

Pastry case, but no filling portion (5)

Ross

I believe the answer is:

piece

'portion' is the definition.
(I know that piece is a type of portion)

'pastry case but no filling' is the wordplay.
'pastry' becomes 'pie' (pie is a kind of pastry).
'but no filling' suggests removing the centre.
'case' with its middle taken out is 'ce'.
'pie'+'ce'='PIECE'

(Other definitions for piece that I've seen before include "Separate part of a whole" , "Section; firearm" , "Castle, perhaps" , "Segment" , "One part of a whole" .)

I've seen this clue in The Times.
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