Very lightly cooked (4)
I believe the answer is:
rare
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">very lightly cooked</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for rare that I've seen before include "Seen once in a blue moon" , "Unusual - exquisite" , "Exceptionable" , "thin on the ground" , "Infrequent; remarkable" .)