Using a funnel, pour ½ cup pomegranate juice into each 25 ounce bottle with flip top lid or another air tight bottle.
Using a funnel, pour freshly made homemade kombucha into each bottle leaving 1-2" head space.
Let bottles sit out (at 75° - 85°) 3-5 days, making sure to pop the lids each day to let out the pressure of the carbon dioxide. Taste each day to test its flavor and fizziness.
Refrigerate when you are happy with the amount of fizz and flavor.