Makes sensational sandwiches somewhere in Germany (5)
I believe the answer is:
essen
'somewhere in germany' is the definition.
(I know that Essen is in Germany)
'makes sensational sandwiches' is the wordplay.
'sandwiches' indicates the answer is hidden within the clue (the answer is sandwiched in by the clue).
'ESSEN' is hidden in the letters of 'makes sensational'.
(Other definitions for essen that I've seen before include "Main industrial city of the Ruhr" , "Industrial city of northwest Germany" , "Krupp HQ (Ger.)" , "European city" , "German industrial centre" .)