Whiskey or a biscuit (7)
I believe the answer is:
bourbon
<span class="explanation-format__ClueExplanation">This clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">whiskey</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(bourbon is a type of whiskey)</span><br/ ><br/ >'<span class="explanation-format__original">a biscuit</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ ></span>
(Other definitions for bourbon that I've seen before include "American whiskey - French royal house" , "10" , "Biscuit -- alcohol" , "Maize whiskey" , "Whiskey - biscuit" .)