Flavoured fats & thickeners
Kajmak
Кајмак · Kajmak is a Balkan/Turkic foundational dairy compound built by skimming the protein-rich skin (skorup) that forms on the surface of long-simmered milk, layering the skim with extra cream, and salting between layers. The result is a thick, buttery, slightly tangy spread classified between clotted cream and fresh cheese, used as a reusable flavour-and-fat component rather than a standalone finished dish.
The formula
approx. 2:1 milk:heavy cream by volume; salt ~1–2% of cream weight
The 'ratio' here describes the home/Pasteurised shortcut: unhomogenised milk simmered, then enriched with added heavy cream before layering. Traditional farm versions use only the surface skim from raw cow or sheep milk with no added cream.
Identity
- Layered, salted dairy skim — not a true cheese (no rennet), but closer to a clotted-cream compound that may be ripened
- Foundational 'fat-and-flavour' base shared across Serbian, Bosnian, Montenegrin, Bulgarian, Macedonian and Turkish cuisines
- Produced by aggregating the floating skin of slow-cooked milk rather than churning or curdling
- Reusable component: a spread, condiment, filling, or finishing fat used inside other dishes
- Distinguished from kaymak by lower fat and longer layered maturation; from butter by retaining milk proteins; from clotted cream by deliberate salting between layers
- Eaten fresh (mladi kajmak) or aged (zreli/old kajmak) with different moisture and pH profiles
Ingredients
| Base | Cow milk (unhomogenised, traditionally raw; sheep or water-buffalo milk also used) | Provides the protein film that forms the skorup; sheep milk gives a richer, sharper profile. |
| Enrichment | Heavy cream (~35–40% fat) | Modern home versions enrich the skim; traditional farm kajmak omits this and relies on milk-fat concentration only. |
| Seasoning | Fine sea salt or table salt | Drawn between layers to season, draw moisture, and preserve; mature versions use more. |
Method
- 1Pour unhomogenised milk into a wide heavy pot and bring it to a bare simmer over low heat, holding it just below boiling for 30–60 minutes.Prolonged gentle heating drives off water, concentrates milk solids, and encourages the milk-fat globules plus casein to migrate upward as a continuous skin.
- 2Remove from heat and let the milk cool slowly, undisturbed, for several hours or overnight so a thick yellow skorup forms and solidifies on the surface.Slow cooling is what builds the characteristic skin/crust; agitation or rapid chilling breaks it and reduces yield.
- 3Carefully lift the solidified skorup with a slotted spoon or skewer; if using the modern method, fold in heavy cream to thicken and round the body.The skim carries the milk proteins and most of the fat; adding cream standardises texture for the layered spread.
- 4Transfer the cream/skorup mix into a shallow earthenware or wooden vessel (kajmak-presa), salting each 2–3 cm layer and repeating until the pot is filled.Layered salting seasons evenly, draws whey, and protects each stratum so the kajmak develops evenly instead of souring in one pocket.
- 5Cover and refrigerate 24–48 hours for fresh (mladi) kajmak, or hold 2–6 weeks at 10–15 °C for mature (zreli/stari) kajmak.Cold rest lets layers fuse; warm maturation allows controlled fermentation that deepens the tang and reduces moisture.
- 6Spoon the finished kajmak into a serving crock, keeping the layered structure visible.Presentation keeps the traditional 'rings' of cream and salt visible, signalling the layering method.
Techniques that matter
Slow skim-and-layer
The defining technique — building texture from successive skorup skimmings rather than a single cream pour.
Cooling without agitation
Allows a continuous protein-fat skin to form on the milk surface.
Salt-between-layers
Differentiates kajmak from plain clotted cream and drives controlled whey separation.
Cold ripening (optional)
Develops mature (zreli) kajmak's sharper, slightly ammoniacal notes.
Variations & derivatives
Mladi (young/fresh) kajmakSerbia, Bosnia
Eaten within days; soft, mild, almost like clotted cream.
Zreli / stari (aged) kajmakSerbia, Montenegro
Ripened weeks to months; firmer, tangier, deeper yellow; the prized export form.
Kaymak (Turkish)Turkey
Often water-buffalo milk; cooked longer and slightly sweeter, traditionally layered with salep.
Sheep-milk kajmakBalkans pastoral / Pindus
Made purely from sheep skorup; richer and sharper than cow-milk versions.
Kaymak with honey or kaymak şerbetiTurkey, Anatolia
Served as a dessert, sweetened with honey or sugar syrup.
Used in these dishes
Substitutions
- Cow milk → Sheep or water-buffalo milk — Sheep gives sharper flavour; buffalo gives highest fat for Turkish-style kaymak.
- Heavy cream → Crème fraîche — Crème fraîche already carries a tang closer to aged kajmak; skip added starter.
- Kajmak → Clotted cream — Clotted cream lacks salt and the layered structure; acceptable for serving but not for cooking into dishes that rely on salt.changes result
- Kajmak → Mascarpone — Mascarpone is sweeter, unfermented, and unsalted — only a last-resort stand-in for sweet fillings.changes result
Troubleshooting
Kajmak is thin or runny instead of layered and sliceable
Skim taken before sufficient cooling, or milk homogenised (no skin forms) → Use unhomogenised milk, cool fully before skimming, and fold in cream to set body
Kajmak turns sharply sour within a day
Insufficient salting between layers, or vessel contamination → Sanitise the crock, salt each layer at ~1–2% by weight, and refrigerate promptly
Grey or off-aroma, yeasty smell
Warm-temperature over-ripening or wild yeasts → Keep young kajmak at 4–8 °C; switch to aged style only if a controlled 10–15 °C cellar is available
Yield much lower than expected
Skim taken too thin, or cream shaken back into the milk → Use a wide shallow pan to maximise surface area and skim before any stirring