Bread for a Reuben (3)
I believe the answer is:
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">bread for a reuben</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 "Bitterly regret" , "East Sussex resort" , "Grain - whiskey - port" , "Hardy cereal crop" , "Type of grass" .)