A-list rum cocktail produced by a measure of public-spiritedness? (8)

I believe the answer is:

altruism

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'by a measure of public-spiritedness?' is the definition.
I can't judge whether this defines the answer.

'a-list rum cocktail' is the wordplay.
'cocktail' indicates an anagram.
'list'+'rum'='listrum'
'listrum' is an anagram of 'ltruism'.
'a'+'ltruism'='ALTRUISM'

'produced' acts as a link.

Can you help me to learn more?

(Other definitions for altruism that I've seen before include "Pine; last word of Lear" , "Unselfishness, Philanthropy" , "Selflessness" , "Unselfishness found in ultraism" , "Unselfish action, generosityfor its own sake" .)

I've seen this clue in The Irish Times.

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