01 - Bring 2 quarts filtered water to a boil in a large saucepan. Add tea bags or loose-leaf tea and steep for 10 minutes. Remove the tea bags or strain out tea leaves.
02 - While the tea is still hot, stir in 1 cup granulated sugar until fully dissolved. Allow the sweetened tea to cool completely to room temperature. This step is critical for proper fermentation.
03 - Pour the cooled sweet tea into a clean, large glass jar. Add the kombucha SCOBY and the starter liquid (or store-bought kombucha).
04 - Cover the jar with a clean cloth or paper towel secured with a rubber band. Store in a room-temperature, shaded space for 5–7 days.
05 - Begin tasting the kombucha after 5 days. Continue daily until the beverage is pleasantly tangy and gently effervescent, but not overly sour.
06 - Lift out the SCOBY and reserve 3/4 cup kombucha to use as a starter for your next batch. Add selected flavoring ingredients directly to the fermentation jar.
07 - Transfer flavored kombucha into clean glass bottles, using a funnel and leaving 1 inch headspace. Seal bottles tightly. Ferment at room temperature for 1–3 additional days to build carbonation.
08 - Once carbonation has reached the desired level, refrigerate bottles to stop fermentation. Strain out any solids before serving. Enjoy chilled, optionally over ice with sparkling water and garnish as desired.