
A silky, well-made white sauce is one of those kitchen fundamentals that transforms everything it touches — from lasagna layers to baked pasta to a simple gratin. This version keeps the ingredient list short and honest: just butter, flour, whole milk, and a whisper of nutmeg and white pepper. That simplicity is exactly what makes it a smart choice when you're being mindful about what goes into your food, since there are no hidden additives, preservatives, or mystery thickeners to worry about. The technique matters here — cooking the flour in the butter for a full minute or two before adding the milk is what keeps the sauce tasting clean and light rather than starchy or heavy. Adding the milk gradually off the heat and whisking continuously gives you that glossy, lump-free texture that store-bought versions rarely achieve. Nutmeg might seem like a small detail, but it rounds out the richness of the milk beautifully without overwhelming the sauce. Make it fresh, use it right away, or press plastic wrap directly onto the surface to hold it until you're ready — it's that easy to get right.
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Melt the butter in a medium saucepan over medium heat until foamy but not browned.
Add the flour all at once and whisk constantly for 1 to 2 minutes, until the mixture turns a pale straw color and smells faintly nutty — this cooks out the raw flour taste.
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