Ordered cola — a mug — and dash of exotic savoury paste (9)

I believe the answer is:

guacamole

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'savoury paste' is the definition.
The definition suggests a singular noun which matches the answer.

'ordered cola a mug and dash of exotic' is the wordplay.
'ordered' indicates an anagram.
'and' says to put letters next to each other.
'dash of' indicates taking the first letters (a small amount of the word).
The initial letter of 'exotic' is 'e'.
'cola'+'a'+'mug'='colaamug'
'colaamug' anagrammed gives 'guacamol'.
'guacamol'+'e'='GUACAMOLE'

Can you help me to learn more?

(Other definitions for guacamole that I've seen before include "Mexican dish" , "Avocado dip" , "Avocado-based dish" , "tasty dip" , "Mashed avocado dish" .)

I've seen this clue in The Times.

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