Sub station?
I believe the answer is:
deli
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">sub station?</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for deli that I've seen before include "food-store?" , "Shop selling processed food products" , "Cold-meat counter" , "Fine foods shop" , "Unusual food shop" .)