
Butter and flour come together in this classic base that quietly powers some of the most satisfying sauces in the kitchen. Cooked low and slow until it reaches a pale straw color and smells faintly nutty, this roux is the kind of foundational technique that makes everything else taste more intentional. Fresh thyme folded in off the heat adds a subtle herbal lift, while a finishing touch of flat-leaf parsley brightens whatever sauce you build from it. Because the ingredient list is so short and straightforward, there's nothing hidden here — no sweeteners, no fillers, just butter, flour, salt, and herbs. That simplicity is exactly what makes it such a reliable choice when you're keeping a close eye on what goes into your food. Use it immediately as the backbone of a béchamel or velouté, or stash it in the freezer in tablespoon portions so a great sauce is always within reach.
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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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