Climate change is causing big problems for Nepal’s farming, putting food security, jobs, and the economy at risk. Scientists say Nepal is the fourth most vulnerable country in the world when it comes to climate impacts, and it also ranks high on the Global Hunger Index. The effects of climate change are already being felt in farming, forestry, and fishing. 

Experts warn that many districts in Nepal could face food shortages in the future. To tackle this, they recommend ‘Climate Smart Agriculture.’ But while new technologies are important, we shouldn’t forget the wisdom of our ancestors. Traditional food preservation methods, like fermentation, could be a powerful tool to fight food insecurity caused by climate change.

Fermentation is one of the oldest ways to preserve food. In Nepal, a country with diverse landscapes, cultures, and cuisines, fermentation has been a key part of life for centuries. From the high Himalayas to the Terai plains, every community has its own unique fermented foods. These foods are not just about survival—they are also about culture, nutrition, and flavor.

Fermentation is a natural process that uses bacteria or yeast to preserve food. It makes food last longer and adds new flavors and textures. Fermented foods are also rich in probiotics, which are good for gut health. In Nepal, with its 128 ethnic groups, fermented foods are a treasure trove of tradition and nutrition. Let’s take a closer look at some of these foods and how they can help us adapt to climate change.

Kinema (fermented soybean)

Kinema is a protein-rich food made from fermented soybeans. To make kinema, cooked soybeans are wrapped in banana leaves and left to ferment for a few days. The result is a sticky, strong-smelling food with a rich umami flavor. It’s used in stews, stir-fries, or eaten as a side dish.

Chhurpi (fermented cheese)

Chhurpi is a type of cheese made from yak or cow milk. It comes in two forms: soft and hard. The hard version can last for years, making it a great food for harsh climates. Soft chhurpi is used in soups and stews, while the hard version is chewed as a snack. 

Serkam (fermented butter) 

Serkam is fermented butter used in Tibetan and Sherpa diets. It’s a key ingredient in butter tea and traditional stews. The fermentation process gives it a rich, unique flavor.

Gundruk (fermented leafy greens)

Gundruk is one of Nepal’s most famous fermented foods. It’s made from mustard, radish, or cauliflower leaves. The leaves are wilted, packed tightly, and left to ferment before being sun-dried. Gundruk is used in soups, curries, and as a pickle.

Sinki (fermented radish taproot)

Sinki is similar to gundruk but made from radish taproots. The radish is packed into bamboo containers and left to ferment for weeks. The result is a tangy, pungent food that can be stored for years.

Purano mula (fermented radish)

Up to 40 years ago, fermented radishes were a common sight in Kathmandu’s Asan Bazar. These radishes were used in pickles, stews, and other dishes, adding a unique flavor.

Tama (bamboo shoot) 

Tama is fermented bamboo shoots, a popular ingredient in Nepali cuisine. It’s used in curries, pickles, and chutneys, giving dishes a tangy flavor.

Akbare chili and salt (naturally fermented chili)

This simple yet powerful fermentation process involves preserving bird’s eye chili in salt. The result is a fiery condiment full of flavor.

Khalpi (fermented cucumber pickle)

Khalpi is a pickle made from overripe cucumbers. It’s fermented with salt, mustard seeds, and spices, creating a cooling and digestive-friendly condiment.

Dahi (yogurt) & lassi

Fermented milk products like yogurt and lassi are popular in Nepal. They are known for their probiotic benefits and are often set in clay pots to enhance flavor.

Masyaura, biriya, and tilkor tarua

These are protein-rich fermented foods made from lentils or black gram. They are used in curries and stews, providing essential nutrients.

Fermented mustard pickles

Mustard seeds are a key ingredient in Nepali pickles. They add a pungent flavor and have antimicrobial properties that help preserve the pickles.

Traditional alcoholic beverages

Fermentation is also used to make traditional drinks like tongba, jaad, and raksi. These beverages are part of cultural celebrations and rituals.

With climate change threatening food security, fermented foods offer a sustainable solution. They are easy to make, require no electricity, and can be stored for long periods. They are also packed with nutrients and probiotics, making them a healthy choice. As the world becomes more interested in gut health and probiotics, Nepal’s fermented foods could gain global attention. Scientists are already studying how these traditional methods can improve food security and health.

But perhaps the most important lesson is this: Adapting to climate change isn’t just about adopting new technologies. It’s also about revisiting the traditional knowledge of our communities. Fermented foods are a perfect example of how ancient wisdom can help us face modern challenges. By preserving and promoting these foods, we can ensure a more secure and sustainable future for Nepal.

The author is a London-based R&D chef