They may be served with caviar (5)
I believe the answer is:
blini
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">they may be served with caviar</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 blini that I've seen before include "Eastern European twenty four Ac" , "Straw hat" , "Russian pancake served with caviar and sour cream" , "Pancakes served with sour cream" , "East European pancakes" .)