Biryani base (4)
I believe the answer is:
rice
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">biryani base</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 rice that I've seen before include "Grain for food" , "Grains from the paddy field" , "Cereal food" , "Curry side dish" , "It grows in paddy-fields" .)