
Béchamel is one of those foundational sauces that makes everything it touches taste more luxurious — think creamy lasagna layers, bubbling gratins, or a silky base for mac and cheese. The ingredient list is refreshingly short: butter, flour, whole milk, and a few seasonings that come together into something far greater than the sum of their parts. For anyone navigating tree nut allergies, this classic French mother sauce is a natural fit, built entirely from pantry staples with zero nut-based ingredients in sight. The one detail worth noting is the nutmeg — it's a spice, not a nut, and it adds a warm, subtle depth that makes the sauce taste genuinely special rather than plain. Whisking the flour into the butter first and cooking it briefly is the key move here; it eliminates any raw, starchy flavor and gives the finished sauce a clean, velvety taste. The slow pour of milk and steady whisking are what keep it lump-free and glossy. Once you've made this from scratch, reaching for a jarred white sauce will feel like a step backward.
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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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