Fireplace fuel (4)
I believe the answer is:
logs
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">fireplace fuel</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 logs that I've seen before include "Firewood; records" , "Written record of a voyage" , "Written records of events on board" .)