I guess that is ice-cream ? not the white butter you get in pancake restaurants in the USA ?
the butter they give there in hemispherical scoops melts in the pancakes/waffles much better than regular pat butter in the UK and one day I need to find out how to reproduce it.
I have only made batter using either baking powder or mixed in egg-whites to raise it, but a DinnersDrive-inDives last week, supposedly with genuine Belgian waffles, was using yeast for raising