Scottish breed of cattle (8,5)
I believe the answer is:
aberdeen angus
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">scottish breed of cattle</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for aberdeen angus that I've seen before include "Scottish black bovine" , "Scottish breed of cattle" , "Joint supplier" , "Supplier of beef" , "beef producer" .)