Standard of wine drunk with journalist, eating a new sort of cheese (3,5,3,4)

'standard of wine drunk' is the definition.
'red white and blue' can be an answer for 'standard' (standard can mean a flag). I'm not certain of the 'of wine drunk' bit.

'with journalist eating a new sort of cheese' is the wordplay.
I cannot quite understand how this works, but
an anagram of 'with' is 'whit' which is within the answer.
'journalist' could be 'ed' (short for editor) and 'ed' is found in the answer.
'a' could be 'an' and 'an' is located in the answer.
'cheese' could be 'blue' (blue cheese is a kind of cheese) and 'blue' is found within the answer.
The remaining letters 'red' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...