紅茶菌可以自己做，開始可以買一些先試試

比如：Kombucha Starter Kit (Deluxe with Heating Mat)

https://www.amazon.com/dp/B083M84HFQ/ref=cm_sw_r_tw_dp_3P2PFb9RXZNSM?_x_encoding=UTF8&psc=1