I'm looking to brew kombucha for the first time. Can you not add any type of flavoring at all during the first ferment? I just want to do something that's typically found in teabags, not anything like fruit that can go rancid. I want to steep lemongrass and ground ginger along with the black tea... Will that not get me good results? Do I really have to wait on the lemongrass and ginger until after the scoby is out and I'm doing a second ferment?