
Butter and flour cooked low and slow — this is the kind of foundational kitchen skill that quietly elevates everything else you make. The technique is simple but precise: constant stirring, gentle heat, and just enough time to cook out the raw flour taste until the paste turns a pale straw color and smells faintly nutty. A pinch of sea salt and optional fresh thyme or parsley round it out with a little brightness. Because the ingredient list is so clean — just butter, flour, salt, and fresh herbs — there's no guesswork about what's hiding in the mix, which makes it a reliable building block for anyone avoiding certain ingredients in store-bought sauces and gravies. Use it immediately as the base for a silky béchamel or velouté, or stash it in the fridge for up to three days and the freezer for up to a month in handy tablespoon portions. Once you have a batch ready to go, homemade cream sauces and soups become genuinely weeknight-friendly.
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Melt the butter in a small heavy-bottomed saucepan over medium-low heat until fully melted and just beginning to foam, about 1 minute. Do not let it brown.
Add the flour all at once and stir immediately with a wooden spoon or silicone spatula, working the mixture into a smooth paste. Continue stirring constantly for 2–3 minutes, until the roux smells faintly nutty and turns a pale straw color — it should pull away from the sides of the pan slightly and look dry on the surface.
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