Sushi supplies (4)
I believe the answer is:
eels
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">sushi supplies</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 eels that I've seen before include "Slippery creatures" , "Sea creatures found in lees" , "Snakes found in lees" , "Water snakes twisting in lees" , "Slippery types" .)