Traditional Gundruk Recipe: How to Make Nepal's Beloved Fermented Greens

What Is Gundruk, and Why Does It Matter?

Gundruk is a fermented and sun-dried leafy vegetable that has sustained hill and mountain communities in Nepal for centuries. Made from radish leaves, mustard greens, cauliflower leaves, or cabbage, it began as a way to preserve abundant summer greens through the lean winter months when fresh vegetables were scarce. Today it's a defining flavor of Nepali cuisine, and modern food science has confirmed just how remarkable it really is.

One detail most recipes get wrong: authentic gundruk is fermented without added salt. The moisture and naturally occurring bacteria already present on the leaves drive the entire fermentation — making gundruk one of the few traditional salt-free vegetable ferments in the world, alongside its cousin sinki (made from radish taproot instead of leaves).

Ingredients

• Fresh radish leaves, mustard greens, or cauliflower leaves — 2 kg
• Clay pot, wooden container, or any airtight vessel
• Clean cloth or lid to cover the container
• A clean, heavy stone or weight for pressing
• Salt (optional — some home cooks add a pinch for taste, but it isn't part of the traditional method)

Method

Step 1: Select and Wash the Greens

Use the freshest greens you can find — freshness directly affects how well fermentation kicks off. Wash thoroughly to remove dirt and grit, then drain well and shake off excess water.

Step 2: Wilt the Greens

Spread the washed greens in a sunny spot and let them wilt until they've lost roughly half their moisture — soft and pliable, not fully dried. Depending on the weather, this takes anywhere from a few hours to a full day.

Step 3: Bruise and Pack

Lightly crush or pound the wilted greens by hand or with a pestle to break down the plant fibers and release more moisture — this jump-starts fermentation. Pack the greens tightly into a clay pot or airtight container, pressing down firmly so there are no air pockets.

Step 4: Fermentation

Weigh the greens down with a clean, heavy stone, cover the container, and keep it in a warm, dark spot. Traditional gundruk ferments for 5 to 10 days — faster in warm weather (5–7 days), longer in cold conditions (up to 10–12 days). Research into gundruk's microbiology shows the fermentation is driven in succession by Lactobacillus cellobiosus, then Pediococcus pentosaceus, and finally Lactobacillus plantarum — a chain of lactic acid bacteria that drops the pH from around 7 to roughly 4.5, which is exactly what gives gundruk its long shelf life and distinctive sourness.

Step 5: Sun-Dry

Once the greens smell pleasantly sour and tangy, remove them and spread them on a bamboo tray or clean cloth in full sun for 2–3 days until completely dry, brittle, and lightweight. Properly dried gundruk keeps for months — sometimes years — without refrigeration.

Tips for Better Gundruk

• A clay pot gives the most authentic flavor and helps regulate moisture during fermentation
• Keep the container somewhere warm (around 25–30°C) — cold conditions slow fermentation considerably
• Check the smell daily; a clean, sour tang means it's working, while any foul or rotten smell means it should be discarded
• Only store gundruk once it's fully sun-dried — residual moisture invites mold during storage

Gundruk vs. Sinki

Sinki is gundruk's close relative, fermented the same way but made from radish taproot instead of leaves. Both rely on the identical lactic-fermentation process, but sinki has a firmer bite and slightly different sourness — worth trying once you've mastered gundruk.

Making Gundruk Ko Jhol and Achar

Soak dried gundruk in water for 15–20 minutes, then squeeze out the liquid. For a quick achar, sauté it in mustard oil with fenugreek seeds, cumin, garlic, and dried red chili. For the classic winter comfort dish gundruk ko jhol (soup), simmer the soaked gundruk with potatoes, tomatoes, and soybeans — a favorite alongside rice or dhindo, especially in the colder months.

Nutritional Value and the Science Behind It

• Rich in probiotics and beneficial lactic acid bacteria that support digestion and gut health
• Good source of vitamins K and C
• High in calcium, iron, and other minerals
• Fermentation naturally develops antimicrobial compounds that help preserve the food
• The fermentation process breaks down anti-nutritive compounds in the raw greens, making nutrients easier for the body to absorb

Fresh, quality gundruk is available from hill-region sellers on FoodSansar — also check out our gundruk health benefits guide and gundruk achar recipe.