German steel city (5)
I believe the answer is:
essen
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">german steel city</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for essen that I've seen before include "Main industrial city of the Ruhr" , "German industrial city on the Ruhr" , "Industrial centre of the Ruhr" , "German place name" , "city in the Ruhr valley" .)