Kombucha

For half gallon:

Brew strong tea using half of the water, dissolve sugar, add rest of water and let cool to room temp. Add to jar with starting culture and pellicle. Ferment, covered but still breathable (e.g. coffee filter), for 7-14 days at warm room temp (taste to determine when its done).

Distribute into bottles with any additions and seal, fermenting for 2-7 days while watching the bubbles in the bottle. Refrigerate when proper carbonation is reached.