BLT spread (4)

I believe the answer is:

mayo

'blt spread' is the definition.
(I've seen this in another clue)

This is the entire clue.

(Other definitions for mayo that I've seen before include "Saucy thing" , "Salad dressing (abbr)" , "Irish county (county town, Castlebar)" , "County of north-west Ireland" , "Salad dressing (informal)" .)

I've seen this clue in The Sunday Times, the LA Times, the Penny Press, the King Feature Syndicate and The Times.

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