Kaassoufflé (cheese soufflé)

Instructions

1. Preheat the oven to 190 °C and butter a soufflé dish or 4 ramekins.
2. Melt the butter in a saucepan, add the flour and cook for 1 minute, stirring.
3. Gradually pour in the milk while whisking until you get a thick, smooth sauce. Remove from the heat.
4. Beat in the yolks one at a time, then half the gouda, the mustard, salt, pepper and nutmeg.
5. Whip the whites to firm peaks with a pinch of salt.
6. Gently fold in one third of the whites to loosen the mixture, then the rest with a spatula, lifting the mass.
7. Pour into the dish, sprinkle with the remaining gouda and bake for 20 to 25 minutes, until the top is golden and puffed.
8. Serve immediately, as the soufflé deflates as it cools.