BIG OAK KOMBUCHA Brewed in small batches at our nano-brewery in Oklahoma City, our kombucha is handcrafted using the freshest ingredients. Healthy and probiotic, Big Oak Kombucha is flavored naturally with fruit and herbs. We love it and think you will too. About Discover more about Big Oak Kombucha! Products Check out our delicious seasonal flavors! Taste Find out where to pick up a bottle, a refreshing taste on tap or a cocktail. Contact Contact us to purchase or find out how to serve our kombucha to your clientele.