Sauce held in colossal sack (5)

I believe the answer is:

salsa

'sauce' is the definition.
(I know that sauce can be written as salsa)

'held in colossal sack' is the wordplay.
'held in' indicates the answer is hidden within the clue.
'SALSA' is hidden in the letters of 'colossal sack'.

(Other definitions for salsa that I've seen before include "that's rather spicy!" , "dancing?" , "Latin American dance music" , "The Latin-American sound" , "dressing" .)

I've seen this clue in The Mirror.

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