Drink supplied by editor -- I'm unwell, sickly, outside (6,4)
I believe the answer is:
mulled wine
'drink' is the definition.
(type of drink)
'editor i'm unwell sickly outside' is the wordplay.
'editor' becomes 'ed'.
'sickly' indicates an anagram.
'outside' indicates putting letters inside.
'im'+'unwell'='imunwell'
'imunwell' anagrammed gives 'mullwine'.
'ed' going inside 'mullwine' is 'MULLED WINE'.
'supplied by' is the link.
(Other definitions for mulled wine that I've seen before include "warmed drink" , "Warming alcoholic drink with sugar and spices" .)