Heavy food (6)
I believe the answer is:
stodge
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">heavy food</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 stodge that I've seen before include "Heavy stuff" , "Food that's hard to digest" , "Heavy, often starchy, food" , "'Heavy, starchy food (6)'" , "Set dog (anag)" .)