Crossword Genius

Basic food preservative (4)

Ross

I believe the answer is:

salt

'basic food preservative' is the definition.
(I've seen this in another clue)

This is the entire clue.

(Other definitions for salt that I've seen before include "Common substance" , "White crystalline substance" , "Crystalline substance used to season food" , "Condiment - old sailor" , "Condiment - experienced sailor" .)

I've seen this clue in the LA Times.
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