Self-service restaurant (9)
I believe the answer is:
cafeteria
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">self-service restaurant</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for cafeteria that I've seen before include "Where one scoffs" , "where food can be picked up" , "Self-service eating place" , "cheap restaurant" , "Self-service eatery" .)