Upstart Kombucha is craft brewed in Boulder, Colorado. Low in sugar, low in carbs, made from organic and premium ingredients, Upstart Kombucha has all the benefits of tea and is the natural, probiotic way to be refreshed. We brew in small batches, and all of our carefully chosen ingredients are steeped together for a more complete and robust flavor. Upstart Kombucha is available in 16 oz bottles throughout Colorado.