Make water kefir using my recipe or your own method.
Add the apple juice and water kefir to a pitcher and stir together.
Pour into a sealable container or flip top bottles (Sometimes I use old juice bottles or mason jar).
Seal tightly and set out of direct sunlight on the counter for 24 hours.
Check after 24 hours and if its bubbly place in the fridge to chill and enjoy.