Foreign style of manger (6)
I believe the answer is:
german
'foreign' is the definition.
(I've seen this before)
'style of manger' is the wordplay.
'style of' indicates an anagram (I've seen 'style' mean this (style can mean to shape or design)).
'manger' anagrammed gives 'GERMAN'.
(Other definitions for german that I've seen before include "Manger (anag.)" , "Proper name for 2" , "Nationality of citizen of Bonn" , "Composer, English? Yes" , "This national rang me up" .)