Never — not ever — put out a pink serviette (6)
I believe the answer is:
napkin
'serviette' is the definition.
('napkin' can be a synonym of 'serviette')
'never not ever put out a pink' is the wordplay.
'not' is a deletion indicator.
'put out' indicates an anagram.
'never' with 'ever' taken away is 'n'.
'a'+'pink'='apink'
'apink' is an anagram of 'apkin'.
'n'+'apkin'='NAPKIN'
(Other definitions for napkin that I've seen before include "piece of material giving consumer protection" , "Cloth to stop, eg, gravy" , "Diner's cloth" , "Serviette; diaper" , "Cloth square used to protect clothing while eating" .)