Croatian White Onion Sauce

1. 1

   Bring onion and water to a boil in a saucepan. Cover, reduce heat, and simmer until tender, 15 to 20 minutes. Transfer onion and water to a blender; puree until smooth.

2. 2

   Heat oil in a saucepan over medium heat. Whisk in flour to form a thick paste the consistency of cake frosting. Continue cooking, whisking constantly, until flour has turned golden and begins to smell like toast, about 20 minutes.

3. 3

   Stir onion puree into flour paste. Cook and stir until thickened to sauce consistency, adding more water if necessary, about 2 minutes. Stir in wine vinegar and salt.

* Per serving · 4 servings · Values may vary.

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