Kefir, sauerkraut, kombucha: five fermented foods worth bringing into your kitchen
Probiotics from fermented food support the gut microbiome and the immune system. Here are five foods already on your supermarket shelves, with concrete ways to add them to everyday meals.

Why is suddenly everyone obsessed with kimchi and kombucha? The reason is simple, the latest research on the gut microbiome shows clear links between fermented food and better digestion, immunity and even mental wellbeing.
Papers published in journals tracking nutrition show that regular consumption of fermented products increases the number of beneficial bacteria in the gut, which has a knock-on effect on the immune system and weight regulation. The best part, you do not need a specialist shop, all of this is available in any larger supermarket in Serbia.
What fermented food actually is
Fermentation is a natural process in which bacteria and yeasts break down sugars in food, releasing lactic acid, alcohol or carbon dioxide. The end result, foods with a far higher count of live probiotic cultures.
Traditional Serbian cuisine knows this well, sauerkraut, mixed pickles and yoghurt have been on the table here for centuries. This is not a new trend, but a return to basics with fresh scientific understanding.
Five foods worth bringing into the kitchen
1. Kefir
The easiest entry point. A glass of kefir before breakfast or after lunch delivers a higher dose of probiotic cultures than yoghurt. The supermarket price in Belgrade runs from around 150 to 250 dinars (1.30 to 2.15 EUR) for half a litre.
A practical tip, if you do not like the taste, add a spoonful of honey and a few berries. Do not cook it or stir it into hot dishes, since heat kills off the live cultures.
2. Sauerkraut (homemade, not pasteurised)
Jarred cabbage from the supermarket is usually pasteurised, which means heat treatment has killed off most of the cultures. Homemade sauerkraut from the farmers’ market, never heated, still has live bacteria.
Two or three spoonfuls with lunch a few times a week is enough. The old grandmother’s advice to eat “a spoon a day” in winter actually has a biological logic to it.
3. Live-culture yoghurt
Check the label, the words “live probiotics” or a list of specific strains (Lactobacillus, Bifidobacterium) confirm it has not been industrially sterilised. Greek yoghurt usually has a higher protein content and a thicker texture.
4. Kombucha
Fermented tea with a lightly sour taste. Homemade production using a SCOBY starter has been popular across Serbia in recent years. Commercial kombucha in shops costs between 150 and 300 dinars (1.30 to 2.60 EUR) per bottle.
Before you start, a word of caution, some versions are high in sugar. Check the label, under 5 g of sugar per 100 ml is the threshold.
5. Kimchi
Korean fermented cabbage with garlic, ginger and chilli. It is appearing in more specialist shops in Serbia, with prices around 600 to 900 dinars (5 to 7.70 EUR) for a 500 g jar.
Excellent with rice, eggs, sandwiches and even soups (add it at the end, after taking the pot off the heat).
What probiotics demonstrably do
Research summarised by dieticians and doctors tracking the microbiome shows probiotics help with normalising digestion, reducing bloating, supporting immunity and the so-called gut-brain axis that affects mood.
What they do not do, they do not cure serious disease and are not a substitute for prescribed medication. If you have a diagnosed digestive condition, see a doctor first, then reach for the kefir.
Practical advice for getting started
Do not start with all five at once. Most people who suddenly increase their intake of fermented food report gas and bloating in the first few days, because the microbiome is adjusting.
Add one food at a time over two weeks, and pay attention to how you feel. After a month you will notice a difference in digestion, energy and the general feeling of lightness after meals.
Which of these do you already eat? Do you have your own family recipe for sauerkraut or kombucha? Share it in the comments.



