Kiselo mlijeko

Ingredients

Milk

• 1 litrewhole milk, the fresher the better
• 3 tbsplive kiselo mlijeko or plain live yoghurt, as starter

To serve

• warm pita or burek
• salt, to taste

Directions

1. Heat the milk slowly to 85°C (185°F) and hold it there for 10 minutes, stirring so it does not catch. This is not about safety alone — it denatures the whey proteins, which is what makes the finished milk thick and spoonable instead of thin.
2. Cool the milk to 43°C (109°F). Test it on the inside of your wrist: it should feel warm but not hot. Hotter than 46°C (115°F) and you will kill the culture you are about to add.
3. Stir a ladle of the warm milk into the starter to loosen it, then stir that back into the pot until evenly mixed.
4. Pour into a clay pot or a bowl, cover with a cloth, and wrap the whole thing in a towel or a blanket. Leave somewhere warm and undisturbed for 8 to 12 hours — an oven with only the light on works well.
5. It is ready when it has set firm enough to pull away from the side of the pot when you tilt it, and a little clear whey has gathered at the edge. Do not stir or move it while it is setting; jostling it breaks the curd and it will never firm up properly.
6. Chill for at least four hours before eating. It thickens further in the cold and the sourness rounds out.
7. Serve cold from a bowl with a pinch of salt, alongside hot pita or burek.

Technique

• Save three tablespoons of each batch to start the next one. The culture stays vigorous for many generations this way, and the flavour settles into something particular to your kitchen.
• Ultra-pasteurised milk sets badly. Ordinary pasteurised whole milk gives a much better curd.
• Longer setting means sourer, not thicker. If it is thin after twelve hours the milk was not heated high enough, or the starter was old.

Substitutions

• Any plain live yoghurt as a starter; check the label says live or active cultures.
• Sheep’s milk, which is what the highland version was made with — richer and noticeably tangier.

Variations

• Drained through cloth for a few hours it becomes a thick spread for bread.
• Whisked with cold water and salt it becomes a drink, close to Turkish ayran.

History

Household fermented milk of the Bosnian highlands, set in clay pots and long the standard side to any pie.

Frequently asked questions

What is Kiselo mlijeko?

Kiselo mlijeko is a fermented & pickled from Bosnia and Herzegovina: thick soured milk drunk from a bowl with pita or burek. Household fermented milk of the Bosnian highlands, set in clay pots and long the standard side to any pie.

How long does Kiselo mlijeko take to make?

Kiselo mlijeko takes 10 min plus 8 to 12 hours setting of preparation and 15 min of cooking. The recipe makes makes 1 litre. It is rated easy to make.

What can I substitute in Kiselo mlijeko?

Yes, within limits. Any plain live yoghurt as a starter; check the label says live or active cultures. Sheep’s milk, which is what the highland version was made with — richer and noticeably tangier.

What is the most important thing to get right in Kiselo mlijeko?

Heat the milk slowly to 85°C (185°F) and hold it there for 10 minutes, stirring so it does not catch. This is not about safety alone — it denatures the whey proteins, which is what makes the finished milk thick and spoonable instead of thin.