A red wine (6)
'a red wine' is the definition.
(I know that claret is a type of red wine)
This is all the clue.
(Other definitions for claret that I've seen before include "Cartel for Bordeaux red wine" , "Dark purplish-red colour" , "Type of red wine" , "Dark red Bordeaux wine" , "Dry red wine of Bordeaux" .)
(Other definitions for pinot that I've seen before include "wine supplier?" , "Kind of wine grape" , "Wine-making grape" , "Black or white grape variety" , "drink" .)