Pour the milk and heavy cream into a wide, shallow baking pan. Stir well so the cream blends evenly with the milk.
Slowly heat the mixture over low heat until it just begins to simmer. Don’t stir. Let small bubbles form under the surface, but avoid a full boil. Let it gently simmer for a few minutes, then turn off the heat.
Set the pan aside in a warm spot and let it rest for about 1 hour. If it starts cooling too much, you can gently warm it again—just don’t let it boil.
Cover the pan with a clean kitchen towel and let it cool to room temperature. Once cooled, refrigerate it overnight or for at least 8–12 hours.
Gently skim off the layer of clotted cream that has formed on top. You can cut it into smaller pieces to lift it off more easily.
If you want a firmer kajmak, strain each layer before storing it. Otherwise, leave it as is—salt added later will naturally draw out the moisture.
Transfer the first layer to a clean bowl or container, and sprinkle it with a little salt. Keep each layer only about as thick as the formed cream.
Repeat the heating process again with the remaining milk and cream in the pan. Simmer gently, let it rest, cool, and refrigerate as before. The second layer may be a bit thinner, but still very worth collecting. Add it to your container with a bit of salt in between.
Repeat once more for a third round. You can stop here or go for a fourth if your milk and cream are rich—this might give you a few more spoonfuls of kajmak.
Traditionally, kajmak isn’t mixed—just layered with salt. But if you prefer, you can stir it gently after collecting. This helps the salt work faster and give you a thicker, slightly quicker-ripening kajmak.