Bread grain (3)
I believe the answer is:
rye
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">bread grain</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 rye that I've seen before include "Whiskey (US)" , "Cereal plant; whisky" , "Hardy cereal crop" , "Cereal grass - Sussex Cinque Port" , "place in East Sussex" .)