Make butter (5)
I believe the answer is:
churn
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">make butter</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 churn that I've seen before include "Large metal milk container" , "Large milk vessel" , "in which butter's made" , "Kind of barrel in which butter in made" , "There may be agitation in this" .)