Food for drab grooms wandering round Swedish capital (11)
I believe the answer is:
smorgasbord
'food' is the definition.
(smorgasbord is a kind of food)
'drab grooms wandering round swedish capital' is the wordplay.
'wandering' indicates anagramming the letters.
'round' means one lot of letters goes inside another.
'capital' says to take the initial letters.
The first letter of 'swedish' is 's'.
'drab'+'grooms'='drabgrooms'
'drabgrooms' anagrammed gives 'smorgabord'.
'smorgabord' going around 's' is 'SMORGASBORD'.
'for' is the link.
(Other definitions for smorgasbord that I've seen before include "Buffet meal" , "Swedish hors d'oeuvres or snack" , "Swedish hors d'oeuvre" , "Buffet of open sandwiches" , "Swedish-style buffet" .)