Sourdough for Borscht

We make pickled beets every now and then and add them to salads - what's most interesting then is that the beets are extracted from the juice, and the juice is secondary. In December, the situation is completely reversed, the liquid becomes the most important part 🙂
Making sourdough is a remarkably simple matter, and the whole topic boils down to beets, salt, and garlic, soaked in water.
You can add a bay leaf and allspice. Ah, soaked means soaked, exactly soaked, because as in all pickles, things that stick out above the water will mold, and then we throw everything away. And here's the second thing, maybe obvious, but worth writing - not every white deposit is mold.
Mold is hairy and bluish or at least gray and then it's already swept away. A white, light, foamy deposit (you'll associate such on the water with pickled cucumbers) is ok, you can collect it, throw it away and continue to cultivate the sourdough. There are articles, recipes, which instruct to make the sourdough long before the holidays.
I almost always realize that something needs to be done around mid-December. I guarantee you that sourdough made a few days before Christmas Eve, even today, will also be great, although it will probably differ in depth and sharpness. Unless you forget to add salt, which happened to me once 😂