White fat (4)
I believe the answer is:
lard
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">white fat</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 lard that I've seen before include "Aggrandise - embellish" , "F [FAT]" , "Pig's fat" , "stuff with bacon" , "Clarified pig fat" .)