
Béchamel is one of those foundational sauces that makes everything it touches taste more luxurious — think creamy lasagna layers, silky gratins, or a velvety base for mac and cheese. This version keeps things beautifully simple, relying on just butter, flour, milk, and a few seasonings to build deep, satisfying flavor. One thing worth noting: the instructions describe the roux as smelling "faintly nutty" as it cooks, but that's purely the toasted flour doing its thing — there are absolutely no tree nuts in this recipe. For anyone navigating walnut sensitivities, that distinction matters, and this sauce delivers all the richness you want without any of the worry. The touch of nutmeg and white pepper at the finish gives it a warmth that feels classic and refined without being fussy. Whisking continuously is the real secret here — it keeps the sauce silky smooth and lump-free from start to finish. Make it fresh and use it right away, or press plastic wrap directly onto the surface to hold it until you're ready to pour it over something wonderful.
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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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