Carbonated quaff (4,3)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">carbonated quaff</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 soda that I've seen before include "for use with whisky?" , "Splash served with some spirits" , "Soft drink" , "Fizzy water, goes well with whiskey" , "Alkaline substance used in cleaning, drinks etc" .)
(Another definition for soda pop that I've seen is " Fizzy drink".)