Thought I would report back on this. I bought a 1/2 gallon of "Juicy Juice" cherry juice from the local grocery. No chemicals but by no means all cherry juice. Mostly apple juice, some cherry and other juices. Rather than dump some out to add sugar I poured it into a 1 gallon plastic jug that had distilled water in it. Added one cup of table sugar, part of a packet of Red Star Premier Classique wine yeast and shook it up to dissolve the sugar. I drilled a hole in the cap and stuck on an "S" bubbler. Total cost about $4
Day 2 it was bubbling away. Day five it quit. Just about as much time as Brewsy claimed. I gave it a few more days and transferred it to a 2 liter seltzer bottle and stuck it in the fridge for a few days. Can't say it cleared much but I'm OK with that for the minimal effort and time.
Honestly it isn't bad. Sweet like a soda but definitely wine.
I had grabbed a second jug of what I thought was the same "cherry" juice but turned out to be fruit punch. We will see how that works.