Wash beets thoroughly and chop into smaller pieces. Make sure to leave skin on.
Make brine by mixing 1 cup of water with 1 tbs of salt.
Place chopped beets in a clear jar and fill to the top with brine, leaving a little headspace at the top.
Store in a cool dark place for up to 2 weeks.
When you notice bubbles forming on top, taste. When you've reached your desired tanginess level, store in fridge and enjoy!
Notes
Warmer temperatures will speed up fermentation. If you want to speed up fermentation even more, add some whey (leftover from yogurt making) or pickle juice to your brine.