Substitute 6 carrots for the beets. (Ginger goes well in carrot kvass; rosemary may overwhelm it.) Carrot kvass is a good option for people who don’t like beets, and it’s a good way to start developing a taste for fermented tonics.
Recipe reprinted by permission from
Kombucha, Kefir, and Beyond by Alex Lewin and Raquel Guajardo. c/o Fair Winds Press, an imprint of the Quarto Group