Varm Kålstuvning

Finely shred the cabbage into thin, even strips and blanch in salted boiling water for 3-4 minutes until slightly tender. Drain thoroughly and press out any excess moisture.

In a heavy-bottomed saucepan, melt the butter over medium heat. Add the flour and whisk continuously to form a smooth roux, cooking for 1-2 minutes without browning.

Gradually pour in the milk, whisking constantly to prevent lumps, and bring the béchamel sauce to a gentle simmer until thickened and smooth.

Season the sauce with mustard, salt, white pepper, a pinch of sugar, and a small splash of vinegar, adjusting to achieve a balanced, tangy flavor.

Remove the pan from the heat and whisk in the egg to enrich and further bind the sauce, stirring quickly to prevent scrambling.

Fold the drained blanched cabbage into the warm sauce until evenly coated, ensuring all strands are well combined.

Return the pan to low heat and warm the kålstuvning gently, stirring often, until the mixture is hot throughout and the flavors have melded.

Serve immediately as a warm side dish, or allow to cool slightly before using as a savory filling in Danish pastry or laminated dough baked goods.