Method of making gold turn red! (5)

I believe the answer is:

order

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'method of making' is the definition.
'order' can be an answer for 'method' (thesaurus). I'm unsure of the 'of making' bit.

'gold turn red' is the wordplay.
'gold' becomes 'or' ('or' is the heraldic name for gold).
'turn' indicates anagramming the letters.
'red' with letters rearranged gives 'der'.
'or'+'der'='ORDER'

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(Other definitions for order that I've seen before include "Regular or proper arrangement" , "Class - instruction - book" , "Enjoin in harmony" , "One of Great Lakes" , "Decree" .)

I've seen this clue in the Evening Standard.

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