In episode 1 of 'It's Alive' with Bon Appétit test kitchen manager Brad Leone, we follow him through his process of brewing his own kombucha. Main takeaways include: be creative, keep your SCOBY clean, take care of her, feed her, and use food-grade bottles to avoid glass explosions. It's a learning experience.
Update: Brad now uses a concentrated formula that doesn't require ice. He mixes 2 quarts of water with sugar and tea. Then dilutes it with room-temperature water.