Stored

Fermented shredded turnip packed in brine inside a ceramic crock, ready to use.

Shows the characteristic fermented form — pale golden strands submerged in cloudy brine — that distinguishes kisla repa from raw turnip and from sauerkraut.

Produce

Soured Turnip (Kisla Repa)

Lacto-fermented shredded turnip, tangy like sauerkraut, stewed with beans and meat in the Balkans.

Soured turnip is turnip shredded and lacto-fermented in brine until tangy and slightly fizzy, much like sauerkraut. A traditional winter food in Slovenia and the wider Balkans, it is rinsed and slow-cooked with beans, smoked meat, or potatoes into hearty stews. The fermentation preserves the turnip and gives it a sour, savory depth and probiotic tang.

Kisla Repa is a lacto-fermented preparation of shredded white turnip that occupies a distinguished place in Balkan preservation traditions. Unlike quick pickles made with vinegar, this product develops its sourness through the slow work of lactic acid bacteria over one to two weeks, creating a flavor that is bright, tangy, and assertively funky without the harshness of acetic acid. The texture differs noticeably from sauerkraut: turnip shreds are more open-grained and crunchier, with a bite closer to radish than to cabbage. Traditionally made in small ceramic crocks during the winter months when turnips are harvested after light frost (which concentrates their sugars), Kisla Repa is a staple of Serbian household cooking that has remained largely regional, appearing in specialty markets and Eastern European grocery stores but rarely in mainstream Western pantries.

The fermentation process is straightforward but demands attention to one principle: keep the vegetables submerged. Turnip shreds float aggressively when weighted, and oxygen exposure leads quickly to softening and off-flavors. The result, when properly made, is a versatile souring agent that behaves differently in the kitchen than its vinegar-pickled cousin — it carries a living acidity that brightens dishes without overwhelming them, and its complexity deepens rather than flatlines when cooked. In Serbian cuisine it most often appears in a long-simmered bean and meat stew, but its uses extend well beyond that single application.

Measured in: g
Storage: Fridge

Types & varieties

White Turnip Ferment

Most common; yields pale, crispy, sharply sour result

Yellow Turnip Ferment

Slightly sweeter base; golden color; less common regionally

Diced vs. Shredded

Shredded is most common; larger dice creates crunchier texture and demands longer ferment time

Fermentation Versus Quick Pickling

Kisla Repa is fundamentally different from turnip pickled in vinegar. Quick refrigerator pickles rely on acetic acid for sourness and reach their flavor peak within days, then plateau. Lacto-fermented turnip continues developing complexity over weeks, and the acids produced (primarily lactic acid, with trace amounts of others) create a rounder, more layered sourness that behaves differently when heated. The living cultures in the finished product also make it more digestible than vinegar-pickled vegetables. If a recipe calls for Kisla Repa and you substitute vinegar-pickled turnip, adjust the quantity downward and add it later in cooking to preserve what acidity it has.

Lacto-fermented: 5–14 days, complex acids, living cultures, improves with time
Vinegar-pickled: ready in days, acetic acid only, flavor plateaus quickly

Winter Fermentation Season

Traditional preparation runs November through February in the Balkans. Light frost sweetens turnips considerably — starches convert to sugars — which gives a better substrate for fermentation and a more palatable finished product. While you can ferment turnips year-round, those harvested after cold nights will yield a noticeably sweeter, more nuanced result. Store unfermented turnips in a cool, dark place for up to several months before use.

Frosted turnips: higher sugar content, better fermentation substrate
Off-season turnips: still workable but leaner in flavor
Storage: cool dark place, several months for whole roots

Common uses

Stewed with white beans and smoked pork (a traditional Serbian preparation)Served as a condiment alongside grilled and roasted meatsFolded into grain bowls with cooked grains, oil, and fresh herbsAdded to soups and stews in the final minutes of cooking for brightnessMixed into potato dishes such as mashed or roasted potatoes for acidic contrastUsed in place of sauerkraut on sausages and sausage rollsLayered into sandwiches, particularly with rich cold cuts and cheeseStirred into scrambled eggs or omelets off heat for a Balkan-style breakfastChopped fine and dressed with oil as a salad componentAs a pizza topping in Balkan-style preparations

Tips & pitfalls

Always use a non-reactive weight to keep turnip fully submerged; oxygen exposure causes softening and off-flavors within days
Taste daily after day 5 — fermentation progresses quickly at warm room temperature and can swing from pleasantly sour to aggressively acidic
Do not rinse after fermentation if using as a condiment; rinsing removes the developed complexity along with the brine
Add a cabbage leaf under the weight to catch floating shreds and maintain clarity of the brine above
Some traditional recipes add a small amount of sauerkraut brine or a single bay leaf to jumpstart consistent fermentation and discourage unwanted organisms
If mold appears on the surface, skim it off promptly; the ferment below is usually fine if it smells only sour, not rotten or slimy
A fermentation lock or loose-fitting lid (not sealed) allows gas to escape without letting oxygen in during active fermentation
Press firmly when packing — turnip shreds compress significantly and need aggressive weighting to stay submerged

Nutrition

28kcal

Energy

117 kJ · per 100 g

Where the calories come from

Protein 12%Carbs 85%Fat 3%

Protein

0.9g

2% DV

Carbs

6.4g

2% DV

Fat

0.1g

0% DV

Fiber

1.8g

6% DV

Sugars

3.8g

of which

Sodium

67mg

3% DV

Notable micronutrients

Vitamin C23% DV

Vitamin B65% DV

Folate4% DV

Potassium4% DV

Thiamin (B1)3% DV

Niacin (B3)3% DV

Source · USDA FoodData Central · Turnips, raw

View on FDC →

In the shops

Matched grocery products

Turnips 400 g Bag
LA COLLITA · kg · Bonpreu
€1.49

Good to know

Common Names: Kisla Repa (Serbian/Croatian), кисла репа (Bulgarian), kiszta répa
Origin: Balkans, particularly associated with Serbian cuisine
Category: Lacto-fermented vegetable
Primary Vegetable: White turnip (Brassica rapa subsp. rapa), sometimes yellow turnip
Fermentation Type: Lactic acid fermentation (homofermentative)
Salting Ratio: Approximately 2–3% salt by weight of shredded turnip
Fermentation Time: 5–14 days at room temperature (18–22°C / 65–72°F)
Shelf Life (Refrigerated): 6–12 months

Substitutes

Sauerkraut — Closest flavor match; different vegetable but same fermentation method — use in equal measure
Torshiyeh Torsh (Iranian) — Tart fermented vegetables in oil and lemon; similar sourness, different profile — adjust seasoning when substituting
Curtido (El Salvador) — Fermented cabbage and carrot; less turnip character but serves the same role as a tangy condiment

Pairs with

White Beans Smoked Pork Bay LeafAllspice BerriesOnionLard or Bacon Fat

Also called

Kisla Repa · Sour Turnip · Fermented Turnip