Impudence, getting second dressings (6)
I believe the answer is:
sauces
'dressings' is the definition.
(I have seen 'Flavourful dressings ' mean 'sauces' so perhaps 'dressings' could also mean 'sauces')
'impudence getting second' is the wordplay.
'impudence' becomes 'sauce' (I've seen this in another clue).
'getting' says to put letters next to each other.
'second' becomes 's' (common abbreviation).
'sauce'+'s'='SAUCES'
(Other definitions for sauces that I've seen before include "2 down is one" , "Flavourings and relishes" , "Thickened liquids served with food" , "Relishes, liquid flavour additives" , "Dresssings for meats" .)