Dry and brittle (5)
I believe the answer is:
crisp
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">dry and brittle</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 crisp that I've seen before include "Firm - sharp - brittle" , "Potato snack" , "snack > firm" , "food in packet" , "Crunchy; fresh" .)