Flavour I discern in a new starter for dinner (7)
I believe the answer is:
aniseed
'flavour' is the definition.
(I've seen this before)
'i discern in a new starter for dinner' is the wordplay.
'discern' becomes 'see' (I've seen this before).
'in' is an insertion indicator.
'new' becomes 'n' (common abbreviation eg NT for New Testament).
'starter for' says to take the initial letters.
The first letter of 'dinner' is 'd'.
'i'+'see'='isee'
'a'+'n'+'d'='and'
'isee' inserted into 'and' is 'ANISEED'.
(Other definitions for aniseed that I've seen before include "Flavouring of sambuca" , "Plant" , "Flavouring of e.g. absinthe" , "Eased in (anag)" , "Strong flavouring often used in sweets" .)