Go miles abroad for source of fine porcelain (7)
I believe the answer is:
limoges
'source of fine porcelain' is the definition.
(Limoges famously produces porcelain)
'go miles abroad' is the wordplay.
'abroad' indicates an anagram (abroad can mean moving around).
'go'+'miles'='gomiles'
'gomiles' is an anagram of 'LIMOGES'.
'for' is the link.
(Other definitions for limoges that I've seen before include "French porcelain centre" , "French commune" , "foreign city" , "French city noted for enamels and porcelain" , "French city known for its porcelain" .)