Pickles & ferment bases
Kvasheni Ohirky
Квашені огірки · A traditional Slavic base preparation of cucumbers preserved by natural lactic-acid fermentation in a salt brine, packed with aromatic leaves, garlic and horseradish. The finished ferment yields both the brined cucumbers and a tangy probiotic brine that serve as building blocks for soups, salads, sauces and snack plates across Ukrainian, Russian, Polish and Lithuanian cuisines.
The formula
50 g stone salt : 1 L cold water (≈5% brine)
Cucumbers submerged 2–4 cm below brine; salt measured as percent of water, not total weight.
Identity
- Lacto-fermentation in salt brine, no vinegar
- Reusable base: pickles + brine both consumed
- Cured with tannin-bearing leaves (currant, cherry, oak, grape, horseradish)
- Naturally probiotic; no sterilization required
- Tradition rooted in Ukrainian village barrel-fermenting, scaled to glass jars today
Ingredients
| Base | Small, firm, freshly picked cucumbers (picking-cucumbers, 6–10 cm) | Trim blossom ends; soak 2–4 h in cold water for crispness. |
| Liquid | Cold fresh water (well or filtered, non-chlorinated) | Chlorine inhibits the lactic bacteria that drive fermentation. |
| Seasoning | Coarse non-iodized stone salt | ≈50 g per litre (5%); iodine and anti-caking agents ruin the ferment and soften the cucumbers. |
| Aromatics | Dill with seed umbels | Provides flavour and mild antibacterial phenols. |
| Aromatics | Garlic cloves, lightly crushed | 3–5 cloves per 3 L jar; supports clean ferment. |
| Flavor | Horseradish leaf (and/or a 3–4 cm piece of root) | Tannins and allyl isothiocyanate preserve the signature crunch. |
| Flavor | Currant / cherry / oak / grape leaves | Tannins inhibit pectinolytic moulds and lock in snap; 3–5 leaves per jar. |
| Aromatics | Black peppercorns (and optional chili) | 10 peppercorns per 3 L; chili added only for heat-loving variations. |
Method
- 1Wash cucumbers thoroughly, cut off blossom ends, and soak 2–4 hours in very cold water until they sink.Hydration plumps the tissue so it will stay crisp; removing the blossom end eliminates enzymes that cause hollows and softening.
- 2Dissolve stone salt in cold water (50 g/L) and stir until fully clear; do not heat.Cold brine protects native lactic bacteria already on the cucumber skin; heating would kill the culture needed for a clean ferment.
- 3Layer horseradish leaf, half the currant/cherry/oak leaves, dill umbels, garlic and peppercorns in a clean jar; pack cucumbers tightly standing upright; top with remaining leaves and a fresh horseradish leaf.Tannin-rich leaves at top and bottom suppress surface mould while locking pectin to keep cucumbers snappy.
- 4Pour cold brine to cover cucumbers by 2–4 cm; seat a clean plate, weight or fermentation lid to keep everything submerged.Anaerobic submersion prevents yeast and mould growth on the surface — oxygen is the main cause of spoiled ferments.
- 5Cover jar mouth with gauze or loose lid and hold at 18–22 °C for 2–4 days until brine turns cloudy and actively bubbles.Mesophilic Lactobacilli convert sugars to lactic acid in this window; cloudy fizzing signals a healthy, active culture.
- 6Move jars to a cold store (2–6 °C, cellar or fridge) for 5–14 more days until flavour rounds out and cucumbers turn olive-green.Cold slows fermentation to a halt at the desired acidity (~0.7–1.0%) and develops the balanced sour-salty profile without over-souring.
- 7Seal jars tightly once fermentation is finished; the brine is now a reusable base for soups, dressings and cocktail mixers.Mature brine carries the same live culture and can seed another jar or be consumed as a probiotic drink/soup stock.
Techniques that matter
Cold-brine lacto-fermentation
Brine at 4–6% salt selects for salt-tolerant Lactiplantibacillus and Leuconostoc while suppressing putrefactive bacteria — no heat or vinegar needed.
Tannin-leaf pack
Currant, oak, grape and horseradish leaves donate tannins that cross-link pectin, giving the legendary crunch and blocking surface moulds.
Anaerobic submersion with weight
Keeping cucumbers 2–4 cm below the brine eliminates oxygen, the only requirement for yeasts and moulds to colonise the surface.
Variations & derivatives
Poltava barrel-stylePoltava region, Ukraine
Layered in oak barrels with cherry and oak leaves, rye-bread crust on top; longer cold ferment (3–4 weeks) for deeper sourness.
Spicy hot fermentSouthern Ukraine
Whole red chili added with garlic; horseradish root slice doubled for sharper heat.
Light-sweet fermentPolish home kitchens
A single bay leaf and a thin slice of horseradish root only; brine at 4% for a milder, faster 5-day ferment.
Grape-leaf versionCarpathian villages
Wild grape leaves replace currant for a more floral, slightly astringent note; sometimes a sprig of tarragon is added.
Used in these dishes
Substitutions
- Cherry / currant leaves → Oak or grape leaves — Same tannin function; oak is slightly more astringent, grape more floral.
- Iodized table salt → Coarse non-iodized stone or sea salt — Iodine and anti-caking agents kill lactic bacteria and make cucumbers soft and slippery — not interchangeable once fermentation has started.changes result
- Dill umbels → Dill stalks + 1 tsp dill seed — Replicates the essential-oil profile when umbels are out of season.
- Horseradish leaf → Extra oak leaves + pinch of ground horseradish — Mimics tannin plus allyl isothiocyanate; flavour slightly weaker.
Troubleshooting
Cucumbers turned soft and rubbery
Iodized salt used, or fermentation temperature too high (>25 °C) → Discard and restart with coarse stone salt at 18–20 °C; brine concentration must hold at 5%.
White film or fuzzy mould on top
Cucumbers broke the surface; insufficient weight or uncovered jar → Scoop off film, press cucumbers fully under brine, add fresh horseradish leaf and a spoon of dry mustard or extra salt on the surface.
Hollow, bubbly cucumbers
Over-mature cucumbers, blossom ends not trimmed, or too-warm initial ferment → Use young firm cucumbers, always trim the stem end, and ferment at ≤22 °C for the first 48 h.
Brine stays clear, no fizz after 3 days
Chlorinated water, or jar too cold (<15 °C) at start → Use filtered/non-chlorinated water and move jar to a warmer 20 °C spot for the first 3 days to wake the culture.