The Forgotten European Tradition of Fermenting Vegetables
Bringing traditional European fermentation knowledge into modern UK kitchens.
When people hear the word fermentation, they often think of something exotic, fashionable or newly discovered.
But fermentation is not new—and it certainly is not foreign to Europe.
Across Poland and much of Central and Eastern Europe, fermenting vegetables was once an ordinary part of household life. The cabbages were packed into barrels, cucumbers were submerged in salty brine, and beetroot was fermented to make deeply coloured, earthy drinks and soups.
These foods were not described as “gut-friendly” or marketed as superfoods. They were simply food: prepared at home, eaten throughout the year and passed from one generation to the next.
I grew up in Poland, where fermentation was part of everyday life. Now that I live in the UK and have children of my own, I feel an increasing responsibility to keep this knowledge alive—not only for my family, but for anyone who wants to develop a closer connection with the food they eat.
Before refrigerators, there was fermentation
Today, we can walk into a supermarket in January and find tomatoes, cucumbers and berries grown thousands of miles away. It is easy to forget how recently this became normal.
For previous generations living through long Central and Eastern European winters, fresh vegetables were not available all year round. Once the frost arrived, very little could be grown for several months. There were no domestic refrigerators or freezers, and shops did not have a continuous supply of produce transported from around the world.
Food grown during the warmer months therefore had to last.
Fermentation was one of the ways families made that possible. Salt, time and naturally occurring microorganisms transformed fresh vegetables into food that could be kept and eaten during winter.
This was not fermentation measured by electronic equipment or performed in carefully styled jars. It took place in kitchens, cellars and pantries, often using large ceramic crocks or wooden barrels. The process was guided by experience: how the vegetables looked, how the brine smelled and how the flavour developed.
The knowledge was practical, detailed and incredibly valuable. Yet because it was rarely written down, much of it could easily disappear within only one or two generations.
Summers were spent growing—and preserving
My grandma and my mum grew vegetables to feed the family every day. During the summer, there was always something that needed to be planted, picked, cleaned or prepared.
The work did not stop when the vegetables left the garden. Evenings were often spent filling jars and preserving whatever had been harvested.
Nothing was casually wasted. Vegetables that were not eaten fresh might be cooked, dried, pickled or fermented. Cucumbers and cabbages were among the vegetables fermented most often. Fruit was made into jams or cooked into kompot—a light, refreshing drink made by gently cooking fruit in water.
Growing food was also connected to the wider community. One household might have an excellent crop of onions, while another had more cabbages than it could use. Surplus produce was exchanged between relatives, friends and neighbours.
It was practical, but it was also social. Food moved between gardens, kitchens and families, together with recipes, advice and stories.
As a child, I did not think of this as cultural heritage. It was simply what people did.
Only after moving away from Poland did I begin to understand how much knowledge was contained in those ordinary routines.
More than sauerkraut
Sauerkraut is probably Europe’s best-known fermented vegetable, but it represents only a small part of the tradition.
Across different regions, cabbage was fermented in many ways—sometimes simply with salt, and sometimes with ingredients such as carrots, apples, caraway. Whole cabbage leaves could also be fermented and later used for wrapping fillings.
Fermented cucumbers were another household staple. In Poland, lightly fermented cucumbers known as ogórki małosolneare one of the tastes of summer. They are usually fermented for only a few days, while they are still bright, fresh and particularly crunchy. Cucumbers left to ferment for longer develop a stronger, more sour flavour and could be stored for the colder months.
Beetroot was fermented to produce zakwas buraczany, a deep-red fermented beetroot liquid traditionally used as the base for Christmas beetroot soup. Many families still have their own method, adjusted through years of experience.
The precise recipes varied between countries, regions and individual homes. That is part of what makes this tradition so interesting: fermentation was never a single standardised process. It was living knowledge, shaped by local produce, climate and family taste.
A living tradition
Fermentation did not disappear with the arrival of refrigerators, freezers and year-round access to fresh produce. Across Poland and many other parts of Europe, families still ferment vegetables at home using recipes, techniques and equipment passed down through generations.
In Poland, you can still find large barrels of fermenting cabbage stored in cool household cellars. Many families continue to use traditional ceramic crocks, weighted with a stone to keep the vegetables safely beneath the brine. Some of these vessels have lasted for generations and carry their own family history.
At the same time, home-fermentation equipment has evolved. Glass jars fitted with airlocks and fermentation weights make the process more convenient and accessible in modern kitchens. Yet the essential principles remain unchanged: good vegetables, the right amount of salt, time and care.
What has changed for many people is not the tradition itself, but the reason for practising it. Fermentation is no longer essential for surviving a long winter, yet it remains a practical way to preserve seasonal produce, create distinctive flavours and maintain a connection with the food traditions we grew up with.
For those who did not grow up with fermentation, these methods may feel like a new discovery. For many European families, however, they remain part of a living tradition—one that continues to evolve without losing its roots.
Why these foods belong in modern UK kitchens
We no longer need to ferment vegetables to survive the winter, but that does not make the practice irrelevant.
In fact, traditional fermentation may be more valuable now than it has been for decades.
Genuine, unpasteurised fermented vegetables can contain live microorganisms and bring greater microbial variety into the diet. Vegetables also naturally provide fibre, which supports the gut microbiome. Research continues to explore how the gut microbiome relates to digestion, immune function and even aspects of mood and overall wellbeing.
Fermentation is not a miracle cure, and no single food can repair an unhealthy diet. But regularly eating a variety of plant foods—including traditionally fermented vegetables—can form part of a balanced, diverse way of eating.
The ingredients can also be remarkably simple: vegetables, salt, herbs or spices, and time. No mysterious preservatives. No unnecessarily long ingredient list.
Fermentation can help us make use of seasonal abundance, reduce waste and enjoy familiar vegetables in an entirely different form. A spoonful of sauerkraut can brighten a rich meal. Fermented cucumbers add acidity and crunch. Fermented beetroot creates a flavour that cannot be replicated simply by adding vinegar.
These foods do not belong only in health-food shops or specialist restaurants. They belong beside everyday meals, just as they did for generations before us.
Preserving more than vegetables
For me, fermentation is about more than preserving food. It is a way of preserving knowledge, culture and the connection between people and what they eat.
I want my children to understand where these foods come from. I want them to know that sauerkraut was not invented as a wellness trend and that fermented cucumbers are more than an unusual accompaniment. They are part of our family history and part of a much wider European food culture.
I also hope my mum and grandma would be proud to see this knowledge being carried into a new place and shared with a new generation.
Through Kultura House, I want to bring traditional European fermentation into modern UK kitchens in a way that feels practical, trustworthy and relevant. Not by treating the past as something frozen in time, but by understanding what it can still teach us.
Because when we keep these traditions alive, we preserve far more than vegetables in a jar.
We preserve a way of knowing, sharing and caring for our food.