Boil 4 cups water
Remove tea bags from their paper pouches and tie the strings together. (If there are paper tags on the end remove those to keep any die out).
Add the 4 cups of boiled water to your jar and toss in the tea bags.
Allow to steep for about 10 minutes.
Remove tea bags and discard.
Add 3/4 cup white sugar to the jar of tea and stir to dissolve completely.
Add the 10 cups of cold filtered water to your jar of tea. Note: Do not add water past the bottom of the neck of the jar. This is to allow space for your SCOBY and the 1 cup of kombucha.
If the water is COOL and NOT WARM, add the SCOBY and 1 cup of unflavored kombucha to the jar. Note: Be sure to wash your hands well with soap prior to handling the SCOBY so you don't add any unwanted bacteria.
Cover with the tea towel, secure in place with the rubber band and place in a warm location. Tip: Add a small piece of paper secured under the rubber band that has the date of when you started each batch.
Taste test your kombucha on days 4-7 to see if its ready.