The Healthiest Fermented Foods and Dairy Options You Should Be Eating

Why Fermented Foods and Dairy Deserve a Place on Your Plate

Fermented foods and dairy products are cornerstones of many European diets, but their value goes beyond tradition. The fermentation process harnesses beneficial bacteria (probiotics) to break down sugars and starches, producing lactic acid and bioactive compounds that can make nutrients more available and food easier to digest. For UK and EU consumers, the key is choosing minimally processed options with live cultures.

The European Food Safety Authority (EFSA) has approved specific health claims for certain probiotics—for example, live yogurt cultures can help with lactose digestion when consumed in adequate amounts. To get these benefits, check labels for "live and active cultures" or "contains probiotics." The UK's National Health Service (NHS) also notes that fermented foods can contribute to a healthy gut microbiome, though it advises looking for products with no added sugars or artificial ingredients.

Science-Backed Fermented Foods to Try

Kefir: A Multi-Strain Probiotic Drink

Kefir is a fermented milk drink that typically contains up to 30 different strains of bacteria and yeasts—far more than standard yogurt. Research suggests it may improve gut motility and reduce inflammation. In the UK, kefir is widely available in supermarkets; choose plain, unsweetened varieties to avoid added sugars. You can also make it at home using starter grains, which are available from health food shops.

Sauerkraut and Kimchi: Fermented Vegetables with Fibre and Vitamins

Sauerkraut (fermented cabbage) is rich in fibre, vitamin C, and vitamin K2, which supports bone health. Kimchi, a Korean staple, adds garlic, ginger, and chili for anti-inflammatory benefits. Both are naturally fermented and contain lactic acid bacteria. In the EU, traditional sauerkraut is often unpasteurised—look for it in the refrigerated section to preserve live cultures. A 100g serving of sauerkraut can provide around 2g of fibre and 15% of your daily vitamin C needs.

Miso and Tempeh: Plant-Based Ferments for Vegetarians and Vegans

Miso, a fermented soybean paste used in Japanese cuisine, is rich in enzymes and antioxidants. A 2021 study in the Journal of Nutrition linked regular miso consumption to lower cardiovascular risk. Tempeh, made from whole fermented soybeans, offers a high-protein, low-fat option with a nutty flavour—around 19g of protein per 100g. Both are excellent for vegetarian and vegan diets across Europe. Use miso in soups or dressings, and slice tempeh for stir-fries or sandwiches.

Healthiest Dairy Products: What to Look For

Plain Greek Yogurt

Greek yogurt is strained to remove whey, resulting in a thicker texture with roughly double the protein of regular yogurt—around 10g per 100g. It also contains probiotics like Lactobacillus bulgaricus and Streptococcus thermophilus. The NHS recommends plain yogurt as a calcium source for bone health; a 150g serving provides about 200mg of calcium, around 20% of the daily adult requirement. Avoid fruit-flavoured versions, which often contain high sugar levels—sometimes up to 15g per serving.

Aged Cheeses: Gouda, Cheddar, and Gruyère

Aged cheeses undergo natural fermentation and contain beneficial bacteria that survive the ageing process. Gouda and Cheddar are particularly rich in vitamin K2, which helps direct calcium to bones rather than arteries. A 30g serving provides around 200mg of calcium—about 20% of the daily adult requirement in the EU. For maximum benefit, choose cheeses aged at least six months, as they tend to have higher K2 levels.

Buttermilk and Cultured Dairy

Traditional buttermilk is the liquid left after churning butter, but modern versions are cultured with lactic acid bacteria. It is lower in fat than cream and contains probiotics that may aid digestion. In Ireland and the UK, buttermilk is used in baking and smoothies for a tangy flavour. A 200ml glass provides around 150mg of calcium and is a good option for those who find yogurt too thick.

Practical Tips for Adding Fermented Foods to Your Diet

• Start small: Add a tablespoon of sauerkraut or kimchi to salads, sandwiches, or grain bowls.
• Swap your breakfast: Replace sugary cereal with plain Greek yogurt topped with fresh berries and nuts.
• Use miso in soups: Dissolve a teaspoon of miso paste in hot water for a quick, probiotic-rich broth—avoid boiling to preserve live cultures.
• Try kefir smoothies: Blend kefir with banana and spinach for a gut-friendly drink.
• Snack on aged cheese: Pair a small piece of Gouda or Cheddar with apple slices for a balanced snack.
• Experiment with tempeh: Marinate and pan-fry tempeh slices for a high-protein addition to stir-fries or salads.