Salad fruit (6)
I believe the answer is:
tomato
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">salad fruit</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for tomato that I've seen before include "Red fruit eaten as veg" , "Part of a BLT sandwich" , "Salad fruit or berry" , "Fruit-vegetable" , "that's suitable to eat" .)