Quick answer

Three well-documented Nepalese fermented foods are gundruk, made from leafy vegetables; sinki, made from radish root; and taama or tama, made from bamboo shoots. They are distinct foods rather than interchangeable names. Preparation varies between communities and households, so this guide describes broad traditions, not a single definitive recipe.

Main ingredients
Leafy greens, radish root or young bamboo shoots
What fermentation changes
Flavour, texture and keeping qualities
One shared method?
No; ingredients and household techniques differ
On our menu?
Gundruk and sinki are not currently listed
Our Aloo Tama
Potato and bamboo shoots cooked with spices
Important distinction
Our menu does not say its bamboo shoots are fermented

Why does fermentation matter in Nepalese food?

Fermentation is one of several ways Nepalese cooks have preserved seasonal ingredients and developed flavour. A 2025 peer-reviewed study sampled traditional household ferments from Nepal, South Korea, Ethiopia and Kazakhstan. Its Nepalese samples included achar, gundruk, sinki and taama, alongside cereal, dairy, legume and meat ferments.

The study found that the raw ingredient and method helped shape each food’s microbial community. That finding supports a useful culinary point: “fermented Nepalese food” is a broad family, not one taste or one process. Gundruk made from greens will not eat like radish-based sinki, and bamboo-shoot tama has its own texture and uses.

Fermentation also sits within a much wider food culture. Rice, lentils, vegetables, pickles, breads and celebratory dishes all have their place. Our guide to Nepalese food and culture is the better starting point for that broader picture.

The useful question is not “What does fermented food taste like?” but “Which ingredient was fermented, and how is it being served?”

What is gundruk?

Gundruk is a fermented leafy-vegetable food. In the 2025 study, sampled gundruk was made with mustard greens, fermented without a deliberately added starter culture, then sun-dried for storage. Nepal Tourism Board’s heritage-cuisine book documents gundrukko jhol, a soup made with fermented and dried leafy vegetables.

Those sources describe reference examples, not every household’s method. Different greens, drying conditions and later preparations can produce different results. Gundruk may be cooked into a soup or used in other dishes, but it should not be reduced to “Nepalese sauerkraut”: the ingredients, techniques and cultural setting are their own.

How is sinki different?

Sinki is based on radish root rather than leafy greens. The same comparative research identifies Nepalese sinki as a spontaneous vegetable ferment and notes that it may be sun-dried before room-temperature storage. That difference in starting ingredient matters: radish root brings a structure and flavour unlike mustard leaves.

Older academic reviews also describe pit fermentation in Himalayan sinki traditions. It is safest to treat that as one documented technique, not a promise that every family prepares sinki identically. Local knowledge, climate and the radishes available all influence practice.

Is tama always fermented?

No. Tama refers to young bamboo shoot, and research in Nepal’s Central Siwalik region records it used fresh as well as fermented. The study documents fresh shoots cooked as vegetables and fermented shoots used in curry, soup, pickle and condiments. It also records fermented bamboo shoots cooked with potatoes in a preparation called aloo tama in other parts of Nepal.

This distinction is important whenever a restaurant menu says “tama”. The word identifies the bamboo-shoot ingredient; it does not, by itself, prove which preservation method a particular kitchen uses.

Which of these foods are on The Great Kathmandu menu?

Our current dine-in menu does not list gundruk, sinki or a standalone fermented-food selection. It does list Aloo Tama, described exactly as “potato and bamboo shoots cooked with spices in traditional Nepalese style.” The menu marks it vegetarian and gluten-free and prices it at £9.95 at publication.

We do not claim in this article that our bamboo shoots are fermented, because the menu does not say that. The menu description—not a general cultural source—is the authority for what we serve. You can check the current dine-in menu before visiting, then ask the team about today’s preparation or any dietary requirement.

For other traditions represented on the menu, read about Mo:Mo dumplings or explore the dry chicken-or-lamb dish in our choila guide.

Common questions about Nepalese fermented foods

Are gundruk and sinki the same?

No. Gundruk is made from leafy vegetables; sinki is made from radish root. Both can be fermented and dried, but their ingredients and character differ.

Does fermentation make every food sour?

Fermentation can bring acidity, but the final flavour also depends on the ingredient, method, duration, drying and how the food is cooked afterwards. There is no reliable single tasting note for every Nepalese ferment.

Are these foods probiotic?

This guide makes no health or probiotic claim. Cooking, drying and storage can all affect microorganisms, and a cultural food tradition should not be turned into a medical promise.

Can I order gundruk or sinki at the restaurant?

They are not listed on our current dine-in menu. Aloo Tama is available, but the menu does not identify its bamboo shoots as fermented.

Source notes