Kachkéis is Luxembourg's distinctive cooked cheese — soft curd melted smooth into a spreadable paste, eaten on dark bread with a smear of mustard. It is a frugal farmhouse classic, turning aged curd into a savoury spread.
Spread kachkéis on dark rye — pale-yellow molten cheese flowing, mustard-warm aroma, caraway specks. Bite: rye bread's earthy density meets the cheese's molten richness, mustard's tang, white pepper's gentle heat, caraway's licorice-warm spice. Pair with cornichons for tart-pickled contrast. With a glass of cold Mosel Riesling, this is the Luxembourg afternoon snack.
Low slow heat is essential — high heat splits the cheese-fat emulsion. Caraway is the Luxembourg signature spice in kachkéis.
Variations
With added beer. With smoked paprika. With cumin. With more cream. With herbs. Spicier with chili.
On the Palate
Where Kachkéis sits in the Luxembourgish flavor cloud
Ingredients
Serves 6
How it's made
7 steps · 20 min active + 5 min waiting
- 13 min
In a heavy small pot over low heat, melt 300 g aged cheese (Trappist or aged Gouda + pungent quark) + 100 ml cream + 50 g butter.
Watch outKeep the heat low the whole time — the cheese should ooze and slump, never bubble; the moment it simmers the fat splits out and the sauce goes oily and grainy.
- 29 min
Stir constantly with a wooden spoon as cheese melts and combines, 8 min.
Watch outStir without stopping as it melts — the cheese passes through a stringy, clumpy stage before it smooths out, and standing still is where it seizes and separates.
- 31 min
When smooth, stir in 1 tbsp Dijon mustard + 1 tsp white pepper + 1/2 tsp salt + 1/2 tsp caraway seeds.
- 43 min
Cook 2 more min until very smooth.
Watch outIt's ready when it pours in a glossy, unbroken ribbon off the spoon — a smooth sheen, not a broken oily film on top, means the emulsion held.
- 51 min
Optional: stir in 1 tbsp dark beer or white wine for depth.
- 66 min
Pour into a serving bowl; cool 5 min.
- 72 min
Serve warm with sliced dark rye bread, mustard, and cornichons.
