Caterer's vessel (3)
I believe the answer is:
urn
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">caterer's vessel</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for urn that I've seen before include "Run to get large vase" , "Rounded vase" , "Vessel for tea or ashes" , "Keats wrote an ode on a Grecian one of these" , "Large pot for coffee or tea" .)