The Joneses wrote:

I did try the alcohol pectin test Wayne, and it's always been the
same - no matter commercial apple juice, pectinious quinces or my grandma,
all I got was cloudy alcohol.

Isn't there the cold plate test?

put a small plate in the freezer for 5-10 minutes and then a few drops
of the jelly on the plate? I've heard it should jell if it's ready to.

B/