Beet Kvass Recipe

You can easily make beet kvass at home using simple proportions.

Ingredients

1 kg fresh red beets
1 liter boiled water, cooled to room temperature
20 g non-iodized salt
4 garlic cloves
2 bay leaves
4 allspice berries

Step-by-Step Preparation

Wash and scald a glass fermentation jar and your preparation tools with hot water.
Peel and slice the beets, then place them into the jar along with the garlic and spices.
Dissolve the non-iodized salt in the cooled water to create a brine. Pour the liquid completely over the vegetables, leaving headspace at the top.
Cover the jar loosely so fermentation gases can escape, and let it stand at room temperature for 5-7 days.
Strain the tart kvass into clean glass bottles and store in the refrigerator.

Fermentation Time and Servings

Time: 20 minutes prep plus 5-7 days fermentation. Yield: approximately 1 liter of kvass.

Practical Tips and Variations

Ensure all beet slices remain submerged beneath the surface of the brine.
Check the aroma and surface of the jar daily.
If fuzzy or colored mold develops on top, discard the entire batch.

Preparing the Beets and Jar

Select firm beets without rotten spots. Wash them thoroughly under running water, peel them, and cut them into slices or large cubes. The pieces should be large enough to weigh down easily inside the jar. Peel the garlic cloves and crush them gently, distributing them with the bay leaves and allspice among the beets. There is no need to pack the beets tightly: the brine should reach the spaces between the pieces.

Wash your jar thoroughly, scald it, and let it cool before use. Do the same for your fermentation weight and the spoon you plan to use. The jar should hold all the beets and liquid while leaving some empty headspace below the cover. The total amount of brine needed depends on the jar shape and how closely the beets are arranged. If you need extra brine, use the ratio of 20 g salt per 1 liter of water.

Fermentation and Daily Monitoring

Pour the cooled brine over the beets until every piece is fully submerged. Press the vegetables down with a clean, food-safe fermentation weight. Spices should also stay beneath the liquid level. Cover the mouth of the jar in a way that lets gas escape, such as with a suitable fermentation lid. Never seal an actively fermenting batch airtight in an ordinary jar.

Place the jar away from direct sunlight. During fermentation, small bubbles may appear and the liquid may become cloudy. Inspect the jar every day to ensure the beets stay submerged and the aroma remains pleasantly sour. Use clean utensils if you need to adjust the weight. If you notice fuzzy or colored mold, discard the entire batch, including the vegetables. Removing the visible growth is not enough. Discard the batch as well if the smell is clearly rotten or raises doubts.

After several days, taste a small amount using a clean spoon. Fermentation time depends in part on the temperature and size of the pieces. If the flavor is still too mild, leave the beets longer, checking daily. When ready, the kvass should have a distinct, pleasantly sour flavor with no signs of spoilage.

Straining and Using Beet Kvass

Pour the finished liquid through a clean strainer into scalded, cooled bottles. Cap the bottles and transfer them to the refrigerator. Cold temperatures slow fermentation, but it can continue, so check the bottles and open them carefully. Check the smell and appearance before use. If you notice mold or worrying signs of spoilage, do not use the kvass.

When preparing borscht, add the kvass in small portions, tasting after each addition. Beet broth and kvass can vary in intensity, so choose the final amount to suit your taste. Heat the soup gently after adding the kvass. The strained beets can also be sliced into salads, provided the whole batch fermented properly and shows no signs of spoilage. Clean equipment and submerged vegetables also matter when making a smaller batch.

FAQ

When is the kvass ready?

It should be sour and have a pleasant fermented beet aroma.

Is it suitable for borscht?

Yes, add it gradually toward the end of cooking.

Can sediment form at the bottom?

Fine sediment can accompany fermentation. Its appearance alone does not replace an assessment of the entire batch: also check the smell, surface, and whether the vegetables were submerged. If there is mold or a smell of spoilage, discard the entire batch. Before transferring the finished liquid, do not shake the jar vigorously if you want to leave most of the sediment at the bottom.