Kombucha is a lightly fizzy, fermented tea drink that's making waves for its probiotic benefits and tart flavor. Making kombucha at home is quite simple: make sweetened tea, add it to a jar with a scoby (symbiotic culture of bacteria and yeast) and let it ferment for about a week. The scoby is a pancake-shaped living culture that eats most of the sugar in the tea, turning it into a tangy and delicious fermented beverage.