yeah, carbonic acid curdles milk. sparkling coffee would be black, or else.
Discussion
It also makes me think of the Cement Mixer cocktail. 🍸
yes, a mildly acidic juice and lots of sugar you can make a drink that is slightly curdled but doesn't taste or feel awful. if you let it sit for an hour or two, though, it will become curds and whey
Of course Mr Mleku would know. 😅
yeah, one of my favourite disgusting milk based drinks as a child was black current syrup and milk. the curdling wasn't extremely fast, mostly the milk just got thicker but it was surprisingly good. i'm just not sure that it would taste good, because actually, curdled milk also has a lot of carbon dioxide in it, a product of the fermentation.
the blackcurrant cordial syrup did curdle the milk, but is very fine and uniform.