01 - Bring 8 cups of filtered water to a boil. Add tea bags or loose-leaf tea, steep for 10 minutes, then remove tea bags or strain out tea leaves.
02 - While the tea is still hot, stir in 1 cup of granulated sugar until completely dissolved. Let the sweetened tea cool to room temperature to protect live cultures.
03 - Transfer the cooled sweet tea into a large, sanitized glass jar. Add the SCOBY and the starter liquid, or use unflavored store-bought kombucha as an alternative starter.
04 - Cover the jar with a clean cloth or paper towel, secure with a rubber band, and place in a warm, dark spot away from sunlight for 5 to 7 days.
05 - After 5 days, taste your brew daily. Once it is tangy with mild fizz and not overly sour, it is ready for the secondary flavoring.
06 - Remove the SCOBY and reserve 3/4 cup of kombucha for future batches. Add your preferred fruits, herbs, or spices from the flavoring list to the remaining kombucha.
07 - Pour kombucha into clean bottles, leaving 1 inch of headspace. Seal tightly and let bottles ferment at room temperature for 1 to 3 days to develop natural carbonation.
08 - Once desired carbonation is reached, refrigerate the bottles. Strain out any solid flavorings before serving. For mocktail presentation, serve over ice with a splash of sparkling water and a garnish.