A Kombucha Symbiotic Culture of Bacteria and Yeast (SCOBY) and 16 ounces of organic assam starter tea is included.. This is the exact amount needed to brew a 1 gallon batch of kombucha. (You will also need black asaam tea and sugar.) A new SCOBY will form each time you brew a batch. You can reuse this SCOBY again and again and save your new SCOBYs that are formed during brewing in a SCOBY hotel or share them with friends!