Fizziness (13)
I believe the answer is:
effervescence
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">fizziness</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 effervescence that I've seen before include "Bubbling - vivacity" , "Sparkle" , "Frothy bubbles" , "Fizziness; vivacity" , "Frothiness" .)